Keratoconus is a non-inflammatory condition where the cornea progressively thins and changes from a dome shape to a cone shape. It typically develops between ages 8-45. The cornea thins and breaks occur in the Bowman's layer and Descemet's membrane. Diagnosis involves examining for Fleischer's ring, Vogt's striae, and irregular topography. Mild cases are treated with glasses or soft contacts while more severe cases require rigid gas permeable contacts or surgical interventions like intracorneal ring segments, lamellar keratoplasty, or penetrating keratoplasty.
Dry eye is a disease of the tear film and ocular surface caused by reduced tear production or increased tear evaporation. It results in eye discomfort, visual disturbance, and potential ocular surface damage. Dry eye can be caused by problems with the lacrimal functional unit such as aging, autoimmune disease like Sjogren's syndrome, or environmental factors. Diagnosis involves evaluating tear production via tests like Schirmer's test and tear breakup time, and assessing ocular surface staining. Treatment depends on dry eye severity and may include artificial tears, anti-inflammatories, punctal plugs, and management of underlying conditions. The goal is to supplement tears, reduce evaporation, stimulate natural tear production, and minimize
Keratoconus is a non-inflammatory thinning of the cornea that causes it to take on a conical shape. It typically develops in adolescence and causes vision impairment due to irregular astigmatism. It is classified into four stages based on refractive error, corneal thickness and shape. While the exact cause is unknown, theories include genetic and enzymatic factors. It is often associated with eye rubbing and connective tissue disorders. Clinical features include corneal thinning, Fleischer's ring, Munson's sign, and scarring in advanced cases. Diagnosis involves topography, pachymetry and biomicroscopy to detect corneal shape changes.
Glaucoma drainage devices (GDDs) provide an alternative pathway for aqueous humor outflow and are used to treat refractory glaucoma. The document discusses the history, design, and types of various GDDs including non-valved devices like Baerveldt and Molteno implants as well as valved devices like the Ahmed Glaucoma Valve. The key components, materials, and surgical techniques for GDD implantation are also summarized.
Dr. Monika Soni presented on the topic of tear film at the upgraded department of ophthalmology at MGMMC & MYH Indore. The presentation discussed the anatomy and physiology of tear film, including the three layers of the tear film, mechanisms of tear secretion and distribution, functions of the tear film, tests to evaluate tear film such as tear breakup time, Schirmer's test, and osmolarity. A variety of glands contribute secretions to form and maintain the tear film, which is essential for maintaining a clear cornea and proper vision.
This document summarizes information about Nd:YAG laser capsulotomy procedures. It discusses the laser used, how it works, preoperative assessment, procedure goals and techniques, potential complications, and ways to manage issues like capsulorrhexis contracture and retained lens cortex. The key points are that Nd:YAG laser capsulotomy can treat posterior capsule opacification, careful preoperative evaluation is important, the goal is to create capsulotomy flaps in the periphery to avoid fragments, and complications may include elevated pressure, inflammation, or retinal issues if not performed properly.
This document summarizes various congenital corneal abnormalities including microcornea, megalocornea, and cornea plana. It then discusses corneal ectasias like keratoconus, keratoglobus, and pellucid marginal degeneration. Keratoconus is characterized by thinning and distortion of the cornea and can be detected using tools like retinoscopy, slit lamp examination, and corneal topography. It progresses slowly from puberty to middle age. Treatments include spectacles, rigid gas permeable contact lenses, and keratoplasty. Keratoglobus involves generalized corneal thinning from birth. Pellucid marginal degeneration causes inferior corneal thinning in a crescent shape.
This document provides an overview of evaluating a glaucoma patient. It discusses the classification, clinical evaluation, history, clinical examination including slit lamp biomicroscopy, tonometry, gonioscopy, optic disc evaluation, visual field testing, and OCT. Classification is based on whether glaucoma is congenital or acquired, primary or secondary, open angle or angle-closure. The clinical evaluation aims to diagnose the specific form of glaucoma, determine severity, and assess disease progression. A thorough history and clinical examination are essential for appropriate glaucoma management.
Keratoconus is a non-inflammatory condition where the cornea progressively thins and changes from a dome shape to a cone shape. It typically develops between ages 8-45. The cornea thins and breaks occur in the Bowman's layer and Descemet's membrane. Diagnosis involves examining for Fleischer's ring, Vogt's striae, and irregular topography. Mild cases are treated with glasses or soft contacts while more severe cases require rigid gas permeable contacts or surgical interventions like intracorneal ring segments, lamellar keratoplasty, or penetrating keratoplasty.
Dry eye is a disease of the tear film and ocular surface caused by reduced tear production or increased tear evaporation. It results in eye discomfort, visual disturbance, and potential ocular surface damage. Dry eye can be caused by problems with the lacrimal functional unit such as aging, autoimmune disease like Sjogren's syndrome, or environmental factors. Diagnosis involves evaluating tear production via tests like Schirmer's test and tear breakup time, and assessing ocular surface staining. Treatment depends on dry eye severity and may include artificial tears, anti-inflammatories, punctal plugs, and management of underlying conditions. The goal is to supplement tears, reduce evaporation, stimulate natural tear production, and minimize
Keratoconus is a non-inflammatory thinning of the cornea that causes it to take on a conical shape. It typically develops in adolescence and causes vision impairment due to irregular astigmatism. It is classified into four stages based on refractive error, corneal thickness and shape. While the exact cause is unknown, theories include genetic and enzymatic factors. It is often associated with eye rubbing and connective tissue disorders. Clinical features include corneal thinning, Fleischer's ring, Munson's sign, and scarring in advanced cases. Diagnosis involves topography, pachymetry and biomicroscopy to detect corneal shape changes.
Glaucoma drainage devices (GDDs) provide an alternative pathway for aqueous humor outflow and are used to treat refractory glaucoma. The document discusses the history, design, and types of various GDDs including non-valved devices like Baerveldt and Molteno implants as well as valved devices like the Ahmed Glaucoma Valve. The key components, materials, and surgical techniques for GDD implantation are also summarized.
Dr. Monika Soni presented on the topic of tear film at the upgraded department of ophthalmology at MGMMC & MYH Indore. The presentation discussed the anatomy and physiology of tear film, including the three layers of the tear film, mechanisms of tear secretion and distribution, functions of the tear film, tests to evaluate tear film such as tear breakup time, Schirmer's test, and osmolarity. A variety of glands contribute secretions to form and maintain the tear film, which is essential for maintaining a clear cornea and proper vision.
This document summarizes information about Nd:YAG laser capsulotomy procedures. It discusses the laser used, how it works, preoperative assessment, procedure goals and techniques, potential complications, and ways to manage issues like capsulorrhexis contracture and retained lens cortex. The key points are that Nd:YAG laser capsulotomy can treat posterior capsule opacification, careful preoperative evaluation is important, the goal is to create capsulotomy flaps in the periphery to avoid fragments, and complications may include elevated pressure, inflammation, or retinal issues if not performed properly.
This document summarizes various congenital corneal abnormalities including microcornea, megalocornea, and cornea plana. It then discusses corneal ectasias like keratoconus, keratoglobus, and pellucid marginal degeneration. Keratoconus is characterized by thinning and distortion of the cornea and can be detected using tools like retinoscopy, slit lamp examination, and corneal topography. It progresses slowly from puberty to middle age. Treatments include spectacles, rigid gas permeable contact lenses, and keratoplasty. Keratoglobus involves generalized corneal thinning from birth. Pellucid marginal degeneration causes inferior corneal thinning in a crescent shape.
This document provides an overview of evaluating a glaucoma patient. It discusses the classification, clinical evaluation, history, clinical examination including slit lamp biomicroscopy, tonometry, gonioscopy, optic disc evaluation, visual field testing, and OCT. Classification is based on whether glaucoma is congenital or acquired, primary or secondary, open angle or angle-closure. The clinical evaluation aims to diagnose the specific form of glaucoma, determine severity, and assess disease progression. A thorough history and clinical examination are essential for appropriate glaucoma management.
UBM and ASOCT provide high-resolution cross-sectional images of the anterior segment including the cornea, anterior chamber, angle, and iris. ASOCT uses optical coherence tomography with a wavelength of 1310nm for improved penetration and reduced retinal damage compared to posterior segment OCT. It allows high-speed imaging of dynamic structures. ASOCT has applications in assessing corneal diseases and procedures, glaucoma (including angle anatomy and iridotomy evaluation), and intraocular lens implantation. Measurements of angle width parameters help evaluate angle closure risk. While valuable for objective angle assessment, ASOCT cannot image all anatomical structures involved in glaucoma.
Keratoconus is a non-inflammatory, progressive thinning and protrusion of the cornea that results in irregular astigmatism and decreased vision. It typically presents after puberty with no gender or racial predilection. Diagnosis is made based on corneal thinning, Fleischer ring, Vogt's striae, and irregular astigmatism seen on keratometry and topography. Mild cases are managed with spectacles while more severe cases require rigid gas permeable contact lenses, Intacs, or corneal transplantation.
The document discusses the challenges of performing phacoemulsification in eyes that have undergone vitrectomy and are filled with silicone oil, such as a shallow anterior chamber and risk of silicone oil migration. It provides tips to overcome these challenges, such as using careful injection of viscoelastic and avoiding unnecessary manipulation. The document also covers preoperative planning considerations like biometry method, IOL choice, and counseling patients about potential complications and refractive surprises.
A chalazion is a small, painless lump on the eyelid caused by a blocked meibomian oil gland. It develops on the upper or lower eyelid as a result of inflammation or viruses affecting the glands. Symptoms include a painless swelling on the eyelid that may blur vision. Treatment typically involves applying a warm compress and sometimes antibiotics or steroids if it does not improve on its own.
This document defines and describes astigmatism. It begins by defining astigmatism as a condition where parallel rays of light entering the eye do not focus to a single point on the retina. It then discusses the optics, etiology, classification, types (including corneal, lenticular, total, regular, irregular, with-the-rule, against-the-rule, oblique), and what patients see with different types of astigmatism (simple, compound, mixed). It concludes by covering prevalence based on age, gender, ethnicity and incidence, as well as effects on visual acuity.
Intracorneal ring segments, such as INTACS, are thin plastic rings that are implanted into the corneal stroma to flatten the cornea and reduce myopia. They are placed in a lamellar channel using either a mechanical or laser procedure. Thicker rings provide greater flattening and myopia correction. Potential risks include visual disturbances and complications requiring removal. Intracorneal rings have been used off-label to treat conditions like post-LASIK ectasia and keratectasia with some success in improving vision.
Posner-Schlossman syndrome is characterized by recurrent unilateral attacks of ocular hypertension accompanied by mild anterior chamber inflammation. It was first described in 1948 and affects people aged 20-50, with males and females equally impacted. The exact pathogenesis is unknown but may involve trabecular meshwork obstruction by mononuclear cells. Symptoms include blurred vision and eye discomfort. Signs include elevated IOP out of proportion to mild inflammation and open iridocorneal angles. While usually self-limiting, long-term damage from recurrent attacks can occur, so treatment focuses on IOP control and inflammation management medically or surgically if needed.
The conjunctiva is a mucous membrane that lines the inner surface of the eyelids and covers the anterior sclera of the eye. It has several functions including lubricating the eye and contributing to immune surveillance. The conjunctiva consists of the palpebral, bulbar, and forniceal conjunctiva. The palpebral conjunctiva lines the inner surface of the eyelids and is subdivided into the marginal, tarsal, and orbital conjunctiva. The bulbar conjunctiva covers the anterior sclera and is separated from it by the episcleral tissue. It consists of the limbal and scleral conjunctiva. The conjunctival fornices are cul
This document contains a 15 question quiz on topics related to community ophthalmology and vision health programs. The questions cover topics such as the National Program for Control of Blindness (NPCB), Vitamin A deficiency, Vision 2020 goals, causes of blindness and low vision in India, and strategies adopted by organizations like WHO and the World Bank to address eye conditions.
This document summarizes the anatomy and physiology of the anterior chamber angle and aqueous humor dynamics. It describes the structures forming the anterior chamber angle, including the ciliary body, trabecular meshwork, and Schlemm's canal. It discusses techniques for estimating the anterior chamber angle, including iris shadow testing, Van Herick testing, and gonioscopy. The document outlines the production of aqueous humor by the ciliary body, including ultrafiltration, active transport, and diffusion. It also summarizes the drainage of aqueous humor through the trabecular meshwork and Schlemm's canal into episcleral veins.
This document discusses neovascular glaucoma, also known as rubeotic glaucoma. It begins by defining the terminology and describing the clinical features. The main causes of neovascular glaucoma are diabetic retinopathy, central retinal vein occlusion, and carotid artery occlusive disease, all of which result in ocular tissue hypoxia. This hypoxia leads to the release of angiogenic factors like vascular endothelial growth factor that induce new blood vessel growth on the iris and in the anterior chamber angle, causing glaucoma. Later sections discuss theories of neovasculogenesis, angiogenic and vasoinhibitory factors, clinical course, differential diagnosis, medical management, and surgical options.
This document summarizes retinal artery occlusion, including classifications, epidemiology, clinical features, risk factors, evaluation, treatment, and prognosis for different types. Central retinal artery occlusion typically causes sudden, painless vision loss and has a poor visual prognosis. Branch retinal artery occlusion often causes partial vision loss and has a better prognosis, with vision recovering to 20/40 or better in most cases. Cilioretinal artery occlusion can occur in isolation or with central retinal vein occlusion, and isolated cases typically have a good visual outcome.
This document discusses various methods for measuring intraocular pressure (IOP), including direct and indirect techniques. Direct manometry involves inserting a needle into the eye, while indirect methods include indentation tonometry using the Schiotz tonometer, various types of applanation tonometry (Goldmann, Perkins, pneumatic, Tono-Pen), and non-contact tonometry. Factors like ocular rigidity, corneal thickness and curvature can influence tonometry readings. Newer methods like the dynamic contour tonometer and ocular response analyzer aim to provide measurements less affected by corneal properties.
This document provides information on the anatomy and diseases of the vitreous humor. It discusses that the vitreous humor is a jelly-like structure that fills the back of the eye and provides support. Common diseases include vitreous liquefaction, detachment, hemorrhage, and opacities. Vitreous liquefaction is the most common degenerative change and causes floaters. Posterior vitreous detachment often occurs in older individuals and may lead to retinal tears or breaks. Vitreous opacities can result from inflammatory cells, aggregates, tumors or hemorrhages. Vitreous hemorrhage usually stems from retinal vessels and can cause vision loss.
This document discusses minimally invasive glaucoma surgery (MIGS) procedures. It defines MIGS as glaucoma surgery that is ab interno, uses a small incision, spares the conjunctiva, causes minimal trauma and tissue disruption, has a high safety profile, allows for rapid visual recovery, and can be combined with cataract surgery. It then describes various MIGS procedures including trabecular micro-bypass stents, gonioscopy assisted transluminal trabeculotomy, excimer laser trabeculotomy, the iStent, and suprachoroidal shunts. It provides details on the mechanisms, surgical techniques, indications, and complications of these different MIGS procedures.
This document discusses biometry, which involves measuring the eye to determine the ideal intraocular lens power for cataract surgery. It notes that biometry errors are the second most common cause of claims in cataract malpractice cases. It describes various techniques for measuring the corneal curvature and axial length of the eye, including manual and automated keratometry, ultrasound A-scan, and optical biometers. It also discusses considerations for biometry in special cases and different intraocular lens calculation formulas.
This document provides information on penetrating keratoplasty (PKP), which involves replacing the full thickness of diseased corneal tissue with donor corneal tissue. It discusses the types of PKP including optical, therapeutic, and tectonic. The common indications for PKP include corneal scarring, infections, dystrophies, and thinning. Preoperative evaluation and obtaining a suitable donor corneal tissue is important. The surgical procedure involves trephination of the donor and host corneas followed by suturing the donor graft. Postoperative complications can include rejection, infections, glaucoma and astigmatism. Long term graft survival depends on the preoperative diagnosis and condition.
Dr. Karan Bhatia provides an overview of keratoplasty (corneal transplantation). There are different types including penetrating keratoplasty (replacing the full thickness of the diseased cornea), partial thickness lamellar keratoplasty, and rotational keratoplasty. Penetrating keratoplasty has been the standard procedure but carries risks. The history and techniques of penetrating keratoplasty are described in detail including pre-operative evaluation, donor cornea excision, recipient cornea trephination, suturing, and post-operative management. Potential complications are also reviewed. Lamellar keratoplasty is introduced as an alternative to penetrating keratoplasty to reduce risks
This document discusses eye donation and its importance in India. It notes that India has 30% of global blindness, with 52 million visually impaired people and 1 in 1000 children being blind. Only 40,720 eyes are collected annually to help the 20-25,000 new cases of corneal blindness each year. The cornea can be donated within 6-8 hours of death to help restore sight to those suffering from corneal blindness. While myths exist, all religions support eye donation, only the cornea is removed in a short procedure, and anyone can pledge their eyes regardless of age, gender, medical conditions or religion. The document appeals for people to pledge and donate their eyes.
1) The authors ask the original study authors to clarify whether gas-forced infusion was used during surgery, as it prevents endothelial cell loss by decreasing intraoperative surges.
2) In their own previous study, the authors found lower endothelial cell loss with gas-forced infusion compared to without it.
3) Several techniques can maintain stability during biaxial phacoemulsification, and gas-forced infusion is one successful method to prevent surges.
UBM and ASOCT provide high-resolution cross-sectional images of the anterior segment including the cornea, anterior chamber, angle, and iris. ASOCT uses optical coherence tomography with a wavelength of 1310nm for improved penetration and reduced retinal damage compared to posterior segment OCT. It allows high-speed imaging of dynamic structures. ASOCT has applications in assessing corneal diseases and procedures, glaucoma (including angle anatomy and iridotomy evaluation), and intraocular lens implantation. Measurements of angle width parameters help evaluate angle closure risk. While valuable for objective angle assessment, ASOCT cannot image all anatomical structures involved in glaucoma.
Keratoconus is a non-inflammatory, progressive thinning and protrusion of the cornea that results in irregular astigmatism and decreased vision. It typically presents after puberty with no gender or racial predilection. Diagnosis is made based on corneal thinning, Fleischer ring, Vogt's striae, and irregular astigmatism seen on keratometry and topography. Mild cases are managed with spectacles while more severe cases require rigid gas permeable contact lenses, Intacs, or corneal transplantation.
The document discusses the challenges of performing phacoemulsification in eyes that have undergone vitrectomy and are filled with silicone oil, such as a shallow anterior chamber and risk of silicone oil migration. It provides tips to overcome these challenges, such as using careful injection of viscoelastic and avoiding unnecessary manipulation. The document also covers preoperative planning considerations like biometry method, IOL choice, and counseling patients about potential complications and refractive surprises.
A chalazion is a small, painless lump on the eyelid caused by a blocked meibomian oil gland. It develops on the upper or lower eyelid as a result of inflammation or viruses affecting the glands. Symptoms include a painless swelling on the eyelid that may blur vision. Treatment typically involves applying a warm compress and sometimes antibiotics or steroids if it does not improve on its own.
This document defines and describes astigmatism. It begins by defining astigmatism as a condition where parallel rays of light entering the eye do not focus to a single point on the retina. It then discusses the optics, etiology, classification, types (including corneal, lenticular, total, regular, irregular, with-the-rule, against-the-rule, oblique), and what patients see with different types of astigmatism (simple, compound, mixed). It concludes by covering prevalence based on age, gender, ethnicity and incidence, as well as effects on visual acuity.
Intracorneal ring segments, such as INTACS, are thin plastic rings that are implanted into the corneal stroma to flatten the cornea and reduce myopia. They are placed in a lamellar channel using either a mechanical or laser procedure. Thicker rings provide greater flattening and myopia correction. Potential risks include visual disturbances and complications requiring removal. Intracorneal rings have been used off-label to treat conditions like post-LASIK ectasia and keratectasia with some success in improving vision.
Posner-Schlossman syndrome is characterized by recurrent unilateral attacks of ocular hypertension accompanied by mild anterior chamber inflammation. It was first described in 1948 and affects people aged 20-50, with males and females equally impacted. The exact pathogenesis is unknown but may involve trabecular meshwork obstruction by mononuclear cells. Symptoms include blurred vision and eye discomfort. Signs include elevated IOP out of proportion to mild inflammation and open iridocorneal angles. While usually self-limiting, long-term damage from recurrent attacks can occur, so treatment focuses on IOP control and inflammation management medically or surgically if needed.
The conjunctiva is a mucous membrane that lines the inner surface of the eyelids and covers the anterior sclera of the eye. It has several functions including lubricating the eye and contributing to immune surveillance. The conjunctiva consists of the palpebral, bulbar, and forniceal conjunctiva. The palpebral conjunctiva lines the inner surface of the eyelids and is subdivided into the marginal, tarsal, and orbital conjunctiva. The bulbar conjunctiva covers the anterior sclera and is separated from it by the episcleral tissue. It consists of the limbal and scleral conjunctiva. The conjunctival fornices are cul
This document contains a 15 question quiz on topics related to community ophthalmology and vision health programs. The questions cover topics such as the National Program for Control of Blindness (NPCB), Vitamin A deficiency, Vision 2020 goals, causes of blindness and low vision in India, and strategies adopted by organizations like WHO and the World Bank to address eye conditions.
This document summarizes the anatomy and physiology of the anterior chamber angle and aqueous humor dynamics. It describes the structures forming the anterior chamber angle, including the ciliary body, trabecular meshwork, and Schlemm's canal. It discusses techniques for estimating the anterior chamber angle, including iris shadow testing, Van Herick testing, and gonioscopy. The document outlines the production of aqueous humor by the ciliary body, including ultrafiltration, active transport, and diffusion. It also summarizes the drainage of aqueous humor through the trabecular meshwork and Schlemm's canal into episcleral veins.
This document discusses neovascular glaucoma, also known as rubeotic glaucoma. It begins by defining the terminology and describing the clinical features. The main causes of neovascular glaucoma are diabetic retinopathy, central retinal vein occlusion, and carotid artery occlusive disease, all of which result in ocular tissue hypoxia. This hypoxia leads to the release of angiogenic factors like vascular endothelial growth factor that induce new blood vessel growth on the iris and in the anterior chamber angle, causing glaucoma. Later sections discuss theories of neovasculogenesis, angiogenic and vasoinhibitory factors, clinical course, differential diagnosis, medical management, and surgical options.
This document summarizes retinal artery occlusion, including classifications, epidemiology, clinical features, risk factors, evaluation, treatment, and prognosis for different types. Central retinal artery occlusion typically causes sudden, painless vision loss and has a poor visual prognosis. Branch retinal artery occlusion often causes partial vision loss and has a better prognosis, with vision recovering to 20/40 or better in most cases. Cilioretinal artery occlusion can occur in isolation or with central retinal vein occlusion, and isolated cases typically have a good visual outcome.
This document discusses various methods for measuring intraocular pressure (IOP), including direct and indirect techniques. Direct manometry involves inserting a needle into the eye, while indirect methods include indentation tonometry using the Schiotz tonometer, various types of applanation tonometry (Goldmann, Perkins, pneumatic, Tono-Pen), and non-contact tonometry. Factors like ocular rigidity, corneal thickness and curvature can influence tonometry readings. Newer methods like the dynamic contour tonometer and ocular response analyzer aim to provide measurements less affected by corneal properties.
This document provides information on the anatomy and diseases of the vitreous humor. It discusses that the vitreous humor is a jelly-like structure that fills the back of the eye and provides support. Common diseases include vitreous liquefaction, detachment, hemorrhage, and opacities. Vitreous liquefaction is the most common degenerative change and causes floaters. Posterior vitreous detachment often occurs in older individuals and may lead to retinal tears or breaks. Vitreous opacities can result from inflammatory cells, aggregates, tumors or hemorrhages. Vitreous hemorrhage usually stems from retinal vessels and can cause vision loss.
This document discusses minimally invasive glaucoma surgery (MIGS) procedures. It defines MIGS as glaucoma surgery that is ab interno, uses a small incision, spares the conjunctiva, causes minimal trauma and tissue disruption, has a high safety profile, allows for rapid visual recovery, and can be combined with cataract surgery. It then describes various MIGS procedures including trabecular micro-bypass stents, gonioscopy assisted transluminal trabeculotomy, excimer laser trabeculotomy, the iStent, and suprachoroidal shunts. It provides details on the mechanisms, surgical techniques, indications, and complications of these different MIGS procedures.
This document discusses biometry, which involves measuring the eye to determine the ideal intraocular lens power for cataract surgery. It notes that biometry errors are the second most common cause of claims in cataract malpractice cases. It describes various techniques for measuring the corneal curvature and axial length of the eye, including manual and automated keratometry, ultrasound A-scan, and optical biometers. It also discusses considerations for biometry in special cases and different intraocular lens calculation formulas.
This document provides information on penetrating keratoplasty (PKP), which involves replacing the full thickness of diseased corneal tissue with donor corneal tissue. It discusses the types of PKP including optical, therapeutic, and tectonic. The common indications for PKP include corneal scarring, infections, dystrophies, and thinning. Preoperative evaluation and obtaining a suitable donor corneal tissue is important. The surgical procedure involves trephination of the donor and host corneas followed by suturing the donor graft. Postoperative complications can include rejection, infections, glaucoma and astigmatism. Long term graft survival depends on the preoperative diagnosis and condition.
Dr. Karan Bhatia provides an overview of keratoplasty (corneal transplantation). There are different types including penetrating keratoplasty (replacing the full thickness of the diseased cornea), partial thickness lamellar keratoplasty, and rotational keratoplasty. Penetrating keratoplasty has been the standard procedure but carries risks. The history and techniques of penetrating keratoplasty are described in detail including pre-operative evaluation, donor cornea excision, recipient cornea trephination, suturing, and post-operative management. Potential complications are also reviewed. Lamellar keratoplasty is introduced as an alternative to penetrating keratoplasty to reduce risks
This document discusses eye donation and its importance in India. It notes that India has 30% of global blindness, with 52 million visually impaired people and 1 in 1000 children being blind. Only 40,720 eyes are collected annually to help the 20-25,000 new cases of corneal blindness each year. The cornea can be donated within 6-8 hours of death to help restore sight to those suffering from corneal blindness. While myths exist, all religions support eye donation, only the cornea is removed in a short procedure, and anyone can pledge their eyes regardless of age, gender, medical conditions or religion. The document appeals for people to pledge and donate their eyes.
1) The authors ask the original study authors to clarify whether gas-forced infusion was used during surgery, as it prevents endothelial cell loss by decreasing intraoperative surges.
2) In their own previous study, the authors found lower endothelial cell loss with gas-forced infusion compared to without it.
3) Several techniques can maintain stability during biaxial phacoemulsification, and gas-forced infusion is one successful method to prevent surges.
celebrating World optometry day in nepalSuraj Chhetri
World Optometry Day was celebrated on March 23rd at the Institute of Medicine in Maharajgunj, Nepal. Optometry involves measuring and correcting vision and treating eye diseases. The field began around 100 years ago with the first optometry licensure laws in the US. In Nepal, optometry education began in 1998 through a collaboration with the University of Auckland, New Zealand. Optometrists are primary eye healthcare practitioners who provide comprehensive eye exams, diagnose and treat diseases, and rehabilitate vision. They undergo a four-year Bachelor of Optometry program.
This document summarizes an eye donation awareness program presented by Durgapur Blind Relief Society (DBRS). It discusses that DBRS has been working to eradicate and prevent blindness in West Bengal since 1986 through various awareness and screening programs. It encourages people to donate their eyes after death which can help restore sight to the blind through corneal transplantation. It provides key information on who can donate, the donation process, and addresses common questions about eye donation.
ORIENTATION PROGRAMON EYE DONATION
1)Do you know...
There are approximately 1.2 crore blind people in India.
Of these around 20 lakh corneally blind are in need of corneal transplantation.
As against an annual requirement of 75,000 to 1,00,000 corneas, only 22,000 corneas are donated in India at present.
2)Facts about eye donation:
Eyes can be donated only after death.
Eyes must be removed within 4 - 6 hours after death.
Eyes can be removed by Registered Medical Practitioner only.
The eye bank team will remove the eyes from the home of the deceased or from a hospital.
A small quantity of blood will be drawn to rule out communicable diseases.
The identities of both the donor and the recipient are kept confidential.
3) What is an eye bank?
An eye bank is the link between the donor and recipient/eye surgeon. It is an organization recognized by government to collect and distribute human eyes to those who require cornea transplants.
5. Who can donate eyes?
Eye donors could be of any age group or sex. People who use spectacles, diabetics, patients with high blood pressure, asthma patients and those without communicable diseases can donate eyes.
Persons with AIDS, Hepatitis B and C, Rabies, Septicaemia, Acute leukemia (Blood cancer), Tetanus, Cholera, and infectious diseases like Meningitis and Encephalitis cannot donate eyes.
6.What is an Eye Donation?
Donating eyes after death.
7.How can I become a donor?
A donor card can serve as an indication to your family, your legal representative and hospitals of your intention to be an eye donor.
Prospective donors should indicate their intention on donor cards and driver's licenses. Perhaps the most important single thing you can do is make your next-of-kin aware of your wishes to make sure they are carried out.
8. How quickly should eyes be removed after death?
As soon as possible, but eyes can be removed up to 6 hours after death. However, in places where the climate is hot, such as India, a shorter duration, preferably 2-4 hours is advisable.
9. Is it necessary to transport the donor to the hospital after death?
No. Eyebanks have personnel who will come to the donor’s home and remove the eyes. The procedure takes about 30-40 minutes.
10. How to donate eyes?
For donors:
Discuss your intention of eye donation with your family doctor and relatives.
The eye bank has registration cards.Fill your details in the registration cards.
Keep one part of the card in your wallet/purse.Place the second part of the card at home and inform all members of your family about your precious gift to society.
For the donor’s relative:
You have the authority and moral responsibility to donate the eyes of the deceased
Get the vital death certificate quickly.Contact your nearest eye bank as soon as possible. Close the eye lids. Cover the closed lids with moist cotton wool.Switch off the fan (Switch on the air conditioner if possible.)Raise the donor’s head by
National programme for control of blindnessSachin Patne
This document outlines a plan to reduce avoidable blindness through expanding access to high-quality eye care, increasing public awareness of eye health, strengthening human resources and infrastructure, with an emphasis on addressing cataracts through screening programs and expanding services at primary health centers and district hospitals. Key aspects of the plan include establishing regional institutes of ophthalmology, creating an organizational structure for a national blindness control program, and working towards goals outlined in the Vision 2020 and Universal Eye Health initiatives.
National programme for control of blindness eye banklionsleaders
The document discusses guidelines for eye banks in India's National Programme for Control of Blindness. The objective is to promote eye banking through government and non-government organizations to obtain adequate corneal tissue for transplants. Eligibility criteria for eye banks include experience providing eye care or collecting a minimum number of eyeballs. Infrastructure requirements and assistance provided include funds for equipment, staffing, and a certain amount per collected eyeball pair. Data shows increasing eyeball collection from 2008-2015 but utilization rates vary from 30-70% with over 50% of collected eyeballs in one state not used for transplants. Suggestions to increase collection and utilization include expanded awareness campaigns and improved coordination between donation centers and eye banks.
This document summarizes the journey of a donated cornea from donor to recipient. It begins with an individual or family signing up to be a donor. If eligible after screening, the eye bank recovers the corneas within 24 hours of death. The corneas then undergo evaluation and are matched with recipients needing transplants. In 2013, Saving Sight recovered over 2,600 corneas and provided them for transplants, giving the gift of sight to many individuals. The document outlines each step of the donation and transplantation process.
Corneal blindness in a southern indian population [autosaved]meenank
This document summarizes a study on corneal blindness in southern India. The study assessed the prevalence and causes of corneal blindness by examining over 10,000 people across both rural and urban areas. The prevalence of corneal blindness was found to be 0.66% (1 in 150 people). The leading causes were childhood keratitis due to vitamin A deficiency, trauma from work or play, and corneal scarring. Most cases were preventable through improved nutrition, safety measures, and health promotion programs targeting at-risk groups. The document calls for strategies like keratoplasty and eye banking to help rehabilitate those already blinded and reduce the prevalence of preventable corneal blindness in India.
My last seminar in Pg.....Less amount of words to describe....Pictorially well represented....Videos may or may not be played in PPT versions below MS Office2013
The document discusses the National Programme for Control of Blindness Vision 2020 in India. It aims to reduce blindness prevalence to 0.3% by 2020 by performing over 21 million cataract surgeries. The programme is implemented through a three-tier structure at the central, state, and district levels. It focuses on reducing backlogs and increasing access to eye care in rural areas through activities like rural eye camps, infrastructure development, and human resource training. The document also provides strategies and protocols for conducting effective rural eye camps and cataract surgeries to reduce blindness in remote populations.
The document discusses corneal transplantation as a way to restore vision for corneal blindness in India. It notes that over 120 million people in India are blind in both eyes, comprising one quarter of the world's total blind population. However, there is a severe lack of donors for corneal transplantation in India due to issues like lack of awareness, social and religious beliefs, and improper infrastructure development. The document calls for awareness campaigns through healthcare teams, media, and educational institutions to increase donors and address the donor shortage.
1) Eye camps are organized by NGOs and provide eye care services to remote areas, with two main types being comprehensive camps and cataract-only camps.
2) Comprehensive camps identify and treat various eye conditions while cataract camps focus solely on cataract surgery.
3) Monitoring camp activities through indicators like number of patients examined and treated helps evaluate effectiveness and allows organizers to improve services.
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This document discusses corneal blindness in Bangladesh and eye donation. It notes that over 800,000 people are blind in Bangladesh, mostly due to cataract and corneal disorders. Corneal blindness particularly impacts children and young adults. The cornea is the transparent tissue covering the eye that allows light to enter. Vision is lost if the cornea becomes cloudy due to disease, injury or infection. While blindness cannot always be prevented, sight can be restored through corneal transplantation by grafting a healthy donor cornea. The document encourages eye donation after death so that donated corneas can restore sight to the blind, noting there is a large unmet demand for donor corneas in Bangladesh.
This document is an eye donation quiz that aims to spread awareness about eye donation. It contains multiple choice questions about various aspects of eye donation, such as who can donate eyes, what parts of the eye are donated, the process of eye donation after death, and the role of eye banks. The key points are that eyes can only be donated after death, the cornea is the part that is donated to help restore sight to the blind, and eye banks coordinate between donors and eye hospitals to facilitate transplants within 6 hours of death.
Corneal transplantation, also known as corneal grafting, is a surgical procedure where a damaged or diseased cornea is replaced by donated corneal tissue. The cornea is the clear tissue covering the front of the eye that allows light to enter. Corneal blindness affects mainly children and young adults and can be caused by injuries, infections, malnutrition, chemical burns, or postoperative complications. Donated eyes can restore sight to those suffering from corneal blindness through transplantation, but there is a shortage of donor eyes in Pakistan resulting in long waitlists of patients needing transplants.
About awareness of eye donation. Author is assistant professor in Ayurvedic Ophthalmology MES Ayurved Mahavidyalaya and consulting ayurvedic ophthalmologist at Shree Vyankatesh Netralay Chiplun.
1) The document discusses the importance of eyesight and donating eyes after death to help the blind see again. It notes that 1.8 million people in India are blind due to corneal issues.
2) Only the cornea can be donated, which takes 15-20 minutes to remove. Anyone can donate their eyes after death regardless of age or health conditions.
3) Donating eyes gives the gift of sight to others and helps prevent blindness, yet many myths exist about donation that prevent people from pledging to donate. The document urges people to pledge and donate their eyes.
The document discusses eye donation and the importance of donating one's eyes after death. It notes that sight is a precious gift and that without sight, the world is closed off. It also explains that donating one's eyes can help restore sight to two people through corneal transplantation and help those who are corneal blind. The document encourages pledging to donate one's eyes after death in order to give the gift of sight to others.
The document discusses eye donation and the need for more donors. It notes that 1.5% of the population is unnecessarily blind and many children suffer from lack of access to eye care and corrective lenses. Registering as an eye donor allows you to help others see after your death. It's a simple process where eye banks retrieve the eyes without disfiguring the body, and all major religions support donation. The corneas can be transplanted to restore sight for those with corneal diseases.
1.5 million Indians suffer from corneal blindness each year, but only 15,000 corneas were collected last year to treat them. There is a huge gap between the number of people who need cornea transplants and the number of transplants performed. The document advocates for increasing awareness of eye donation and expanding donation programs to help the millions of people waiting for transplants.
This document discusses eye donation and corneal blindness. It notes that the cornea can become damaged from disease, injury or infection, causing vision loss. Corneal blindness disproportionately affects children and young adults. While approximately 1.1 million people in India are waiting for corneal transplants, only 20,000-25,000 donated eyes are collected annually. Eye donation can provide sight to two people through transplantation of a single donated cornea. The document encourages pledging eyes after death and increasing awareness of eye donation.
This document discusses promoting eye donations and vision care in India. It notes that corneal blindness affects over 4.6 million Indians and 0.2 million are added yearly. The document outlines the organization's objectives to promote awareness of eye donations and involve more volunteers. It discusses who can donate eyes, the causes of corneal blindness, and myths versus realities about eye donations. The overall goal is to remove blindness in India by maximizing pledges and donations to help the millions suffering from corneal blindness.
This document discusses eye donation and blindness in India. It provides statistics on the blind population in India and how eye donation could help address it. It explains that corneal blindness is a major cause of blindness that can be treated through cornea transplants. The document aims to increase awareness of eye donation and dispel myths about the process. It outlines the Rotary Club of Mumbai Kandivali West's vision and goals for providing eye care services and increasing eye donations in the community.
1) The document promotes an initiative called "Gift Your Sight" to increase awareness about eye donation and address the gap between supply and demand of donated eyes in India.
2) It provides information on how donating eyes after death can help restore sight to two people with corneal blindness. The cornea can become damaged through various causes leading to blindness.
3) The author has been working to increase awareness through various activities like organizing camps, blogging, and speaking on the radio to encourage people to pledge and donate their eyes after death.
Organ donation involves surgically removing an organ or tissue from a donor and placing it into a recipient whose organ has failed. Common organs and tissues that can be donated include the heart, kidneys, liver, pancreas, intestines, corneas, bone, heart valves, skin, and blood vessels. Eye donation specifically helps those with corneal blindness or color blindness by replacing damaged corneas to restore vision. Eye banks collect, store, and distribute donated corneas for transplantation according to legal guidelines to benefit recipients in need of sight-restoring procedures.
This document discusses the role of general practitioners in promoting eye donation in India. It notes that while there are over 52 million visually impaired people in India, only around 40,000 cornea transplants are performed each year due to a lack of donated eyes. General practitioners are well-positioned to encourage eye donation as they are often trusted by families and issue death certificates. The document recommends several ways general practitioners can help boost donation rates, such as providing eye donation information and forms in their clinics.
This document discusses the role of general practitioners in promoting eye donation in India. It notes that while there are over 52 million visually impaired people in India, only around 40,000 cornea transplants are performed each year due to a lack of donated eyes. General practitioners are well-positioned to encourage eye donation as they are often trusted by families and issue death certificates. The document advocates for GPs promoting donation through posters, brochures, and carrying donation forms to make the process more convenient.
Eye donation Eye banking and Keratoplasty KHALILMohammad Khalil
This document discusses eye donation and corneal transplantation. It begins by noting that corneal blindness affects over 1.5 million Indians and is increasing by 30,000 people per year. However, only about 15,000 corneas are collected annually, leaving a major shortage. The document then discusses what eye donation entails, who can donate, common myths, and the legal aspects. It also provides details on the enucleation procedure, storage and transportation of donated corneas, and different types of corneal transplantation surgeries like penetrating keratoplasty and lamellar keratoplasty.
1. The document discusses the importance of eye care and eye donation. It emphasizes that eyes are a precious gift and should be protected from accidents and diseases to preserve sight.
2. It provides tips for proper eye hygiene and care, including washing faces daily and avoiding exposure to dust or bright lights. It warns against unsafe behaviors like using others' towels to wipe eyes.
3. The document lists several famous Indian personalities who have pledged to donate their eyes, helping to encourage more people to support the cause of eye donation.
This document describes a school vision screening program run by the Bangladesh Eye Donation Society. It notes that nearly 13.5 million children have vision problems and a quarter of adolescents have eye issues. Early detection of vision problems through school screening can improve quality of life. The program aims to assess visual acuity and detect common eye disorders in students to ensure proper referrals. It is important to screen all students to allow for early detection of potential vision issues. The program hopes to raise awareness among teachers and guardians about child eye care.
The document discusses blindness prevalence globally and in Bangladesh. It introduces the Bangladesh Eye Donation Society, a non-profit organization founded in June 2013 that aims to eliminate preventable blindness in Bangladesh through awareness campaigns on eye donation and care, free eye testing and camps, and encouraging volunteers. The Society calls for individuals to join as members or volunteers to help achieve their mission.
Inflammatory glaucoma is caused by ocular inflammation raising IOP and damaging the optic nerve. It can be angle-closure or open-angle. Major causes include Posner-Schlossman syndrome, Fuchs' heterochromic iridocyclitis, and juvenile rheumatoid arthritis. Diagnosis involves assessing IOP, optic nerve damage, and presence of inflammation. Treatment focuses on controlling inflammation with steroids and lowering IOP with eyedrops or surgery. Posner-Schlossman syndrome specifically causes acute unilateral open-angle attacks in young adults.
Intermittent exotropia is the most common form of divergent strabismus where the eye drifts outward intermittently and periods of good alignment. It typically onset before age 5 and manifests during visual inattention. Treatment includes non-surgical options like spectacle correction, patching, and prism therapy or surgical options like lateral rectus recession if control is lost. The goal of treatment is to restore eye alignment and preserve binocular single vision.
The eyelid is a thin fold of skin that covers and protects the eye. It assists in distributing tears and draining them from the eye. The upper eyelid extends from the eyebrow down and forms the upper boundary of the palpebral fissure, while the lower eyelid merges with the cheek. Each eyelid has skin, muscle, and glandular layers. When closed, the upper eyelid covers about 2mm of the cornea while the lower lid just touches the cornea.
EASY TUTORIAL OF HOW TO USE G-TEAMS BY: FEBLESS HERNANEFebless Hernane
Using Google Teams (G-Teams) is simple. Start by opening the Google Teams app on your phone or visiting the G-Teams website on your computer. Sign in with your Google account. To join a meeting, click on the link shared by the organizer or enter the meeting code in the "Join a Meeting" section. To start a meeting, click on "New Meeting" and share the link with others. You can use the chat feature to send messages and the video button to turn your camera on or off. G-Teams makes it easy to connect and collaborate with others!
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The Evolution of SEO: Insights from a Leading Digital Marketing AgencyDigital Marketing Lab
Explore the latest trends in Search Engine Optimization (SEO) and discover how modern practices are transforming business visibility. This document delves into the shift from keyword optimization to user intent, highlighting key trends such as voice search optimization, artificial intelligence, mobile-first indexing, and the importance of E-A-T principles. Enhance your online presence with expert insights from Digital Marketing Lab, your partner in maximizing SEO performance.
Telegram is a messaging platform that ushers in a new era of communication. Available for Android, Windows, Mac, and Linux, Telegram offers simplicity, privacy, synchronization across devices, speed, and powerful features. It allows users to create their own stickers with a user-friendly editor. With robust encryption, Telegram ensures message security and even offers self-destructing messages. The platform is open, with an API and source code accessible to everyone, making it a secure and social environment where groups can accommodate up to 200,000 members. Customize your messenger experience with Telegram's expressive features.
EASY TUTORIAL OF HOW TO USE REMINI BY: FEBLESS HERNANEFebless Hernane
Using Remini is easy and quick for enhancing your photos. Start by downloading the Remini app on your phone. Open the app and sign in or create an account. To improve a photo, tap the "Enhance" button and select the photo you want to edit from your gallery. Remini will automatically enhance the photo, making it clearer and sharper. You can compare the before and after versions by swiping the screen. Once you're happy with the result, tap "Save" to store the enhanced photo in your gallery. Remini makes your photos look amazing with just a few taps!
This tutorial presentation provides a step-by-step guide on how to use Facebook, the popular social media platform. In simple and easy-to-understand language, this presentation explains how to create a Facebook account, connect with friends and family, post updates, share photos and videos, join groups, and manage privacy settings. Whether you're new to Facebook or just need a refresher, this presentation will help you navigate the features and make the most of your Facebook experience.
This tutorial presentation offers a beginner-friendly guide to using THREADS, Instagram's messaging app. It covers the basics of account setup, privacy settings, and explores the core features such as close friends lists, photo and video sharing, creative tools, and status updates. With practical tips and instructions, this tutorial will empower you to use THREADS effectively and stay connected with your close friends on Instagram in a private and engaging way.
Lifecycle of a GME Trader: From Newbie to Diamond Handsmediavestfzllc
Your phone buzzes with a Reddit notification. It's the WallStreetBets forum, a cacophony of memes, rocketship emojis, and fervent discussions about Gamestop (GME) stock. A spark ignites within you - a mix of internet bravado, a rebellious urge to topple the hedge funds (remember Mr. Mayo?), and maybe that one late-night YouTube rabbit hole about tendies. You decide to YOLO (you only live once, right?).
Ramen noodles become your new best friend. Every spare penny gets tossed into the GME piggy bank. You're practically living on fumes, but the dream of a moonshot keeps you going. Your phone becomes an extension of your hand, perpetually glued to the GME ticker. It's a roller-coaster ride - every dip a stomach punch, every rise a shot of adrenaline.
Then, it happens. Roaring Kitty, the forum's resident legend, fires off a cryptic tweet. The apes, as the GME investors call themselves, erupt in a frenzy. Could this be it? Is the rocket finally fueled for another epic launch? You grip your phone tighter, heart pounding in your chest. It's a wild ride, but you're in it for the long haul.
Project Serenity is an innovative initiative aimed at transforming urban environments into sustainable, self-sufficient communities. By integrating green architecture, renewable energy, smart technology, sustainable transportation, and urban farming, Project Serenity seeks to minimize the ecological footprint of cities while enhancing residents' quality of life. Key components include energy-efficient buildings, IoT-enabled resource management, electric and autonomous transportation options, green spaces, and robust waste management systems. Emphasizing community engagement and social equity, Project Serenity aspires to serve as a global model for creating eco-friendly, livable urban spaces that harmonize modern conveniences with environmental stewardship.
2. BLINDNESS PROFILE
IN BANGLADESH
• Over 800,000 blind
• 650,000 due to cataract
• 40,000 children blind
• 8-10% of total blindness are cornea related
4. WHAT IS CORNEA ?
Cornea is the clear,
transparent, tissue covering
the front of the eye.
It serves as a window to allow
light to enter the eye.
Vision will be dramatically
reduced or lost if the cornea
becomes cloudy due to
disease, injury or infection.
5. • Injuries
• Malnutrition
• Infections
• Chemical Burns
• Congenital Disorders
• Post operative complications
6. NOT EVERYTHING IS LOST
People who have lost sight can hope to regain it
back only by the help of people who have
healthy vision like us
8. CORNEAL TRANSPLANTATIONCORNEAL TRANSPLANTATION
•Procedure in which the cornea
of donor eye is grafted to replace
the diseased cornea of the
patient.
•A significant proportion of blind
patients can have their sight
restored through corneal
transplantation.
10. Eye Donation
• Eye donation is donation of our eyes after
death so that our eyes can give light to a blind
person’s life.
• There is a huge gap between the supply and
demand of eyes.
• A small gesture from us can bring down the
gap.
11. • The 2 eyes from a donated person will go to 2
different individuals, so 2 blind person will get
the gift of sight.
• So instead of burying our eyes, let us pass on
this God given gift to vision deprived people
so that we bring back colours to their lives.
12. • Eyes must be removed within 6 hours after death.
• The eye bank team will remove the eyes from the home
of the deceased or from a hospital.
• Eye removal does not delay the funeral since the entire
procedure takes 20-30 minutes only.
• Eye retrieval does not cause disfigurement.
• The identities of both the donor and the recipient are
kept confidential.
13. WHO CAN DONATE EYES
Age - NO BAR for Eye Donation
Any Gender can donate eyes
15. WAITING FOR THE GIFTWAITING FOR THE GIFT
Because of this huge shortfall of donor eyes inBecause of this huge shortfall of donor eyes in
Bangladesh there is a long list of waiting patientsBangladesh there is a long list of waiting patients