This document summarizes the clinical classification and investigations for uveitis. It divides uveitis into infectious and non-infectious categories. Infectious uveitis can be bacterial, viral, fungal or parasitic in origin. Non-infectious uveitis is further divided into those with a known systemic association and those without. Investigations may include blood tests, imaging like ultrasound and angiography, aqueous or vitreous taps, and biopsies depending on the severity, recurrence and presence of granulomatous signs. Specific tests are aimed at identifying underlying infectious or inflammatory diseases. A thorough history and examination provide important clues to guide appropriate investigations.
1. Differential diagnosis of disc edema includes conditions like papilledema, optic neuritis, ischemic optic neuropathy, diabetic papillopathy, and hypertensive retinopathy.
2. Papilledema is caused by increased intracranial pressure and presents with bilateral disc swelling and normal vision, while optic neuritis typically causes unilateral vision loss and eye pain.
3. Diabetic papillopathy presents as transient unilateral or bilateral disc edema that resolves within months without vision loss, while malignant hypertension can lead to bilateral disc edema and vision changes as part of hypertensive retinopathy.
Eales' disease is an idiopathic inflammatory retinal vasculitis that primarily affects young males in India. It involves peripheral retinal perivasculitis and ischemia leading to neovascularization and recurrent vitreous hemorrhage. While its exact etiology is unknown, it has been associated with tuberculosis and hypersensitivity to tubercular proteins. Treatment involves corticosteroids to reduce inflammation, laser photocoagulation to ablate new vessels and reduce hemorrhage risk, and vitrectomy for non-resolving hemorrhage or retinal detachment.
This document provides an overview of central serous chorioretinopathy (CSC), including its pathogenesis, clinical presentation, diagnosis, course and treatment. CSC is characterized by a localized serous retinal detachment in the macula due to leakage of fluid from the choroid. It typically affects men ages 30-50 and can be associated with stress, corticosteroid use, hypertension and type A personality. Diagnosis is usually clinical but can be confirmed with fluorescein angiography showing characteristic leakage patterns or optical coherence tomography identifying subretinal fluid. While most cases resolve spontaneously, laser photocoagulation or photodynamic therapy may be used in persistent or recurrent cases to seal leaking sites and accelerate resolution.
This document provides an overview of macular holes, including:
- Classification into primary (idiopathic) and secondary holes. Primary holes are caused by vitreous traction while secondary have other causes like trauma.
- Stages of macular hole formation based on Gass classification from early detachment to full thickness hole.
- Surgical treatment involves vitrectomy to relieve traction along with internal limiting membrane peeling which has good outcomes in improving vision.
- Differential diagnosis includes epiretinal membranes and pseudoholes which have different presentations and prognoses.
The document discusses the anatomy, embryology, and function tests of the macula lutea. It describes the macula lutea as a 5.5mm circular area at the posterior pole of the retina that subserves central vision. It notes the macula's delayed development until 8 months gestation and specialization of the fovea which contains the highest concentration of cones. The document outlines various macular function tests used to evaluate macular diseases, including visual acuity, Amsler grid, microperimetry, and electroretinography. It provides details on the anatomy and cell layers of the fovea centralis and techniques for assessing macular integrity with tests like the Maddox rod.
Retinoschisis is a splitting within the neurosensory layer of the retina that frequently occurs in the inferotemporal quadrant. It is usually asymptomatic but can potentially cause visual field defects. On examination, it appears as a well-circumscribed, dome-shaped elevation of the inner retina. OCT shows a break between the retinal layers. While often stable, it can occasionally lead to retinal detachment or holes. Treatment may be needed if complications occur.
Corneal dystrophy is a group of inherited bilateral corneal conditions characterized by progressive corneal opacity. There are several classifications of corneal dystrophy based on the layer of the cornea affected, including epithelial dystrophy affecting the epithelium and basement membrane, Bowman's layer dystrophy, stromal dystrophy affecting the stroma, and Descemet's membrane and endothelial dystrophy affecting the inner layers. Diagnosis involves slit lamp examination to determine the opacity pattern, location, and characteristics in direct and retroillumination. Treatment depends on the severity and type but may include lubricants, therapeutic contact lenses, corneal transplantation, or newer procedures like DSAEK.
This document summarizes the clinical classification and investigations for uveitis. It divides uveitis into infectious and non-infectious categories. Infectious uveitis can be bacterial, viral, fungal or parasitic in origin. Non-infectious uveitis is further divided into those with a known systemic association and those without. Investigations may include blood tests, imaging like ultrasound and angiography, aqueous or vitreous taps, and biopsies depending on the severity, recurrence and presence of granulomatous signs. Specific tests are aimed at identifying underlying infectious or inflammatory diseases. A thorough history and examination provide important clues to guide appropriate investigations.
1. Differential diagnosis of disc edema includes conditions like papilledema, optic neuritis, ischemic optic neuropathy, diabetic papillopathy, and hypertensive retinopathy.
2. Papilledema is caused by increased intracranial pressure and presents with bilateral disc swelling and normal vision, while optic neuritis typically causes unilateral vision loss and eye pain.
3. Diabetic papillopathy presents as transient unilateral or bilateral disc edema that resolves within months without vision loss, while malignant hypertension can lead to bilateral disc edema and vision changes as part of hypertensive retinopathy.
Eales' disease is an idiopathic inflammatory retinal vasculitis that primarily affects young males in India. It involves peripheral retinal perivasculitis and ischemia leading to neovascularization and recurrent vitreous hemorrhage. While its exact etiology is unknown, it has been associated with tuberculosis and hypersensitivity to tubercular proteins. Treatment involves corticosteroids to reduce inflammation, laser photocoagulation to ablate new vessels and reduce hemorrhage risk, and vitrectomy for non-resolving hemorrhage or retinal detachment.
This document provides an overview of central serous chorioretinopathy (CSC), including its pathogenesis, clinical presentation, diagnosis, course and treatment. CSC is characterized by a localized serous retinal detachment in the macula due to leakage of fluid from the choroid. It typically affects men ages 30-50 and can be associated with stress, corticosteroid use, hypertension and type A personality. Diagnosis is usually clinical but can be confirmed with fluorescein angiography showing characteristic leakage patterns or optical coherence tomography identifying subretinal fluid. While most cases resolve spontaneously, laser photocoagulation or photodynamic therapy may be used in persistent or recurrent cases to seal leaking sites and accelerate resolution.
This document provides an overview of macular holes, including:
- Classification into primary (idiopathic) and secondary holes. Primary holes are caused by vitreous traction while secondary have other causes like trauma.
- Stages of macular hole formation based on Gass classification from early detachment to full thickness hole.
- Surgical treatment involves vitrectomy to relieve traction along with internal limiting membrane peeling which has good outcomes in improving vision.
- Differential diagnosis includes epiretinal membranes and pseudoholes which have different presentations and prognoses.
The document discusses the anatomy, embryology, and function tests of the macula lutea. It describes the macula lutea as a 5.5mm circular area at the posterior pole of the retina that subserves central vision. It notes the macula's delayed development until 8 months gestation and specialization of the fovea which contains the highest concentration of cones. The document outlines various macular function tests used to evaluate macular diseases, including visual acuity, Amsler grid, microperimetry, and electroretinography. It provides details on the anatomy and cell layers of the fovea centralis and techniques for assessing macular integrity with tests like the Maddox rod.
Retinoschisis is a splitting within the neurosensory layer of the retina that frequently occurs in the inferotemporal quadrant. It is usually asymptomatic but can potentially cause visual field defects. On examination, it appears as a well-circumscribed, dome-shaped elevation of the inner retina. OCT shows a break between the retinal layers. While often stable, it can occasionally lead to retinal detachment or holes. Treatment may be needed if complications occur.
Corneal dystrophy is a group of inherited bilateral corneal conditions characterized by progressive corneal opacity. There are several classifications of corneal dystrophy based on the layer of the cornea affected, including epithelial dystrophy affecting the epithelium and basement membrane, Bowman's layer dystrophy, stromal dystrophy affecting the stroma, and Descemet's membrane and endothelial dystrophy affecting the inner layers. Diagnosis involves slit lamp examination to determine the opacity pattern, location, and characteristics in direct and retroillumination. Treatment depends on the severity and type but may include lubricants, therapeutic contact lenses, corneal transplantation, or newer procedures like DSAEK.
The document discusses various macular diseases including age-related macular degeneration (ARMD), central serous chorioretinopathy, cystoid macular edema, macular holes, and epiretinal membranes. It provides details on symptoms, assessments, pathologies, treatments, and other information for each condition. ARMD is a leading cause of blindness and can involve drusen, retinal pigment epithelium tears, dry or exudative forms including serous retinal detachments and subretinal neovascular membranes. Management may include optical correction, laser photocoagulation, or photodynamic therapy with verteporfin.
Posterior vitreous detachment (PVD) occurs when the vitreous gel in the eye separates from the retina. It is a natural aging process that usually happens in people's 60s and 70s. PVDs are often asymptomatic, but can sometimes cause floaters, flashes of light, or a cobweb-like visual effect. While PVD itself does not affect vision, on rare occasions it can cause retinal tears or detachments, which require prompt treatment to prevent vision loss if left untreated. PVD is typically diagnosed via dilated eye exam but may also require tests like OCT or ultrasound. No treatment is needed for most PVDs but follow up exams are recommended to check for complications.
This document discusses various causes of optic disc edema. It begins by defining disc edema as swelling of the optic disc that can be caused by active or passive factors other than papilledema. Several pseudoedemas are described including drusen, myelinated fibers, tilted discs, and hypoplastic discs. True disc edemas can result from inflammation, vascular issues like CRVO, infiltrative diseases, or papilledema from increased intracranial pressure. Papilledema is usually bilateral non-inflammatory swelling caused by conditions that raise ICP like brain tumors, infections, pseudotumor cerebri, or venous sinus thrombosis. The pathogenesis and features of optic neuritis, multiple sclerosis, and papille
1. A 41-year-old man presented with blurred disc margins and was found to have reactive syphilis serology, indicating neurosyphilis presenting as asymptomatic optic perineuritis.
2. A 9-year-old boy presented with intermittent headaches and abdominal pain and was found to have bilateral optic disc swelling and markedly elevated blood pressure, leading to the diagnosis of a pheochromocytoma.
3. In both cases, the optic disc swelling was an unusual presenting sign that led to the diagnosis of an underlying systemic condition.
This document provides information on optic neuritis, including its definition, etiology, pathology, clinical features, diagnosis, and treatment. Some key points:
- Optic neuritis is an inflammatory condition of the optic nerve that can cause visual loss. Common causes include multiple sclerosis, infections, and autoimmune disorders.
- Clinical features include sudden visual loss or blurring in one eye, pain with eye movement, and abnormal pupil response to light. Diagnosis is made based on symptoms and MRI findings.
- Treatment involves corticosteroids via IV or oral administration. The Optic Neuritis Treatment Trial found IV methylprednisolone can help delay conversion to multiple sclerosis.
This document provides information on optic atrophy, including:
1. It defines optic atrophy as the permanent loss of retinal ganglion cell axons and death of these cells, clinically manifesting as changes in the optic disc color and structure and variable visual dysfunction.
2. It describes the anatomy and visual pathway of the optic nerve, noting it has over 1 million axons originating from the retina.
3. It discusses the various classifications, causes, pathological features, and appearances of primary, secondary, consecutive, and glaucomatous optic atrophy based on histopathological and ophthalmoscopic findings.
Choroidal neovascular membranes (CNVM)Md Riyaj Ali
ย
Choroidal neovascularization (CNV) involves the abnormal growth of new blood vessels from the choroid layer of the eye through Bruch's membrane. This can cause vision loss and is a common cause of wet macular degeneration. CNV occurs due to alterations in Bruch's membrane and high levels of vascular endothelial growth factor. It is classified based on its location relative to the retinal pigment epithelium and fovea. Symptoms include sudden vision loss and visual distortions. CNV is diagnosed through imaging like optical coherence tomography and fluorescein angiography and treated with injections of anti-VEGF drugs to inhibit blood vessel growth.
Ischemic condition affecting the eye.
The ischemia can occur secondary to systemically problem [or] particulary the eye.
Many retinal vascular disorders {like CRAO,CRVO,Diabetic retinopathy,Hypertensive Retinopathy} shows ischemic signs.
This document provides an overview of different types of corneal dystrophies, including their classification, clinical features, histopathology, and management. It discusses epithelial and subepithelial dystrophies, corneal dystrophies of Bowman's layer, stromal corneal dystrophies, and Descemet membrane and endothelial dystrophies. The key points are that corneal dystrophies are inherited, bilateral, and slowly progressive disorders that begin early in life and are characterized by corneal opacification without relationship to environmental factors. Diagnosis involves classification based on the anatomical layer affected and treatment typically involves managing symptoms although surgery may be needed if vision is impaired.
This document provides an overview of the optic nerve and various optic neuropathies, including:
- The general structure of the optic nerve and signs of dysfunction like reduced vision and visual field defects.
- A classification of optic neuropathies including inflammatory, glaucomatous, traumatic, hereditary, and ischemic types.
- Descriptions of specific conditions like papillitis, NAION, Leber's hereditary optic neuropathy, and various congenital optic disc abnormalities.
- Details on infectious and non-infectious optic neuritis, including symptoms, signs, and etiologies.
This document discusses Coats' disease, a rare eye condition characterized by abnormal blood vessels in the retina. It presents in children, more often in boys than girls, and causes vision loss. Symptoms include blurred vision and eye swelling. Examination shows leaking blood vessels, fluid buildup, and retinal detachment. Treatment depends on the stage, ranging from close monitoring to laser therapy, cryotherapy, surgery, and in severe cases, eye removal. The goal is to preserve vision or the eye's structure.
It describes about the procedure of Hess charting. it serves as a great tool to understand the concepts involved. Suitable for optometry course. This is not a routine procedure but an important procedure which is used in diagnosis.
The document discusses optic neuritis, including its causes, symptoms, diagnosis, and treatment. Specifically, it notes that optic neuritis is characterized by loss of central vision, visual acuity, and color perception, along with an afferent pupil defect. It can be caused by conditions like multiple sclerosis, infections, granulomatous diseases, and others. Diagnosis involves visual field testing, color vision testing, and MRI imaging of the optic nerve. Treatment focuses on corticosteroids to reduce inflammation acutely and prevent future attacks.
This document provides information on hereditary macular dystrophies and macular function tests. It begins by describing the anatomical landmarks of the macula, including the fovea and foveola. It then discusses psychophysical macular function tests such as visual acuity testing, color vision testing, photostress testing, and Amsler grid testing. The document also covers electrophysiological tests like electroretinography (ERG) which objectively measures retinal electrical activity in response to light. ERG testing analyzes the a-wave from photoreceptors and b-wave from bipolar cells.
This document discusses exodeviations (divergent strabismus), which occurs when the visual axis is deviated laterally and the fovea is rotated nasally. Exodeviations can be comitant or incomitant. Comitant exodeviations include infantile exotropia, intermittent exotropia, and sensory exotropia. Incomitant exodeviations include paralytic, restrictive, and musculofascial innervational anomalies. Treatment options depend on the type of exodeviation and include non-surgical approaches like optical treatment and orthoptic exercises or surgical approaches like lateral rectus recession and medial rectus resection.
Retinoschisis is a splitting of the neurosensory retina into inner and outer layers, causing visual field defects. Senile retinoschisis occurs in 5% of people over 20 and presents as bilateral, peripheral retinal elevations that may progress circumferentially. Juvenile retinoschisis is an X-linked condition causing macular schisis and peripheral retinoschisis from birth, leading to progressive vision loss over decades. Both types are generally asymptomatic aside from visual field defects but may develop complications like retinal detachment, vitreous hemorrhage, or neovascularization. Diagnosis involves OCT, FA, and ERG and management focuses on complications or calcium channel blockers for macular schisis
Uveitis is a general term for intraocular inflammation that does not indicate the specific site or cause of inflammation. It can be caused by autoimmune or infectious processes. Uveitis is a common cause of visual impairment and blindness worldwide. It is classified based on the site of inflammation - anterior, intermediate, posterior or panuveitis. Developing a differential diagnosis involves considering factors such as acuity of onset, laterality, associated symptoms and response to previous therapies. Common etiologies include idiopathic disease, infections like tuberculosis, and autoimmune diseases like sarcoidosis and Behcet's disease. Treatment involves corticosteroids and immunosuppressive therapies.
An epiretinal membrane is an avascular fibrocellular membrane that grows on the inner surface of the retina, causing macular dysfunction. It consists of various cell types and collagen. Symptoms include blurry vision and metamorphopsia. Observation is usually sufficient for mild cases, but surgery is recommended for significant vision loss or distortion. Peeling the membrane improves vision in most cases, though cataracts are a common complication. Prognosis is better when pre-op vision is good and the duration of symptoms is short.
Optic atrophy refers to changes in the optic nerve resulting from axonal degeneration between the retina and lateral geniculate body, causing visual disturbance and changes in the optic nerve head appearance. It can be classified as primary, secondary, or consecutive. Primary optic atrophy occurs without prior nerve swelling and may result from lesions along the visual pathway. Secondary optic atrophy is preceded by long-term nerve swelling and includes causes like chronic papilledema. Consecutive optic atrophy is caused by diseases of the inner retina or its blood supply. Neuroretinitis refers to optic neuritis with retinal inflammation, most commonly caused by cat scratch fever, and presents with papillitis, macular edema, and sometimes a macular
This document provides an overview of optic atrophy, including:
1. It defines optic atrophy as degeneration of the optic nerve due to damage to the visual pathways from the retina to the lateral geniculate body.
2. It classifies optic atrophy based on whether damage originates in the retina or more centrally, and by cause. Primary optic atrophy occurs without swelling, while secondary involves prior swelling.
3. Causes of primary optic atrophy include optic neuritis, compression, hereditary conditions, toxins, trauma, and multiple sclerosis. Secondary optic atrophy follows conditions like papilledema.
4. Treatment focuses on the underlying cause, with vitamins sometimes used
The document discusses various macular diseases including age-related macular degeneration (ARMD), central serous chorioretinopathy, cystoid macular edema, macular holes, and epiretinal membranes. It provides details on symptoms, assessments, pathologies, treatments, and other information for each condition. ARMD is a leading cause of blindness and can involve drusen, retinal pigment epithelium tears, dry or exudative forms including serous retinal detachments and subretinal neovascular membranes. Management may include optical correction, laser photocoagulation, or photodynamic therapy with verteporfin.
Posterior vitreous detachment (PVD) occurs when the vitreous gel in the eye separates from the retina. It is a natural aging process that usually happens in people's 60s and 70s. PVDs are often asymptomatic, but can sometimes cause floaters, flashes of light, or a cobweb-like visual effect. While PVD itself does not affect vision, on rare occasions it can cause retinal tears or detachments, which require prompt treatment to prevent vision loss if left untreated. PVD is typically diagnosed via dilated eye exam but may also require tests like OCT or ultrasound. No treatment is needed for most PVDs but follow up exams are recommended to check for complications.
This document discusses various causes of optic disc edema. It begins by defining disc edema as swelling of the optic disc that can be caused by active or passive factors other than papilledema. Several pseudoedemas are described including drusen, myelinated fibers, tilted discs, and hypoplastic discs. True disc edemas can result from inflammation, vascular issues like CRVO, infiltrative diseases, or papilledema from increased intracranial pressure. Papilledema is usually bilateral non-inflammatory swelling caused by conditions that raise ICP like brain tumors, infections, pseudotumor cerebri, or venous sinus thrombosis. The pathogenesis and features of optic neuritis, multiple sclerosis, and papille
1. A 41-year-old man presented with blurred disc margins and was found to have reactive syphilis serology, indicating neurosyphilis presenting as asymptomatic optic perineuritis.
2. A 9-year-old boy presented with intermittent headaches and abdominal pain and was found to have bilateral optic disc swelling and markedly elevated blood pressure, leading to the diagnosis of a pheochromocytoma.
3. In both cases, the optic disc swelling was an unusual presenting sign that led to the diagnosis of an underlying systemic condition.
This document provides information on optic neuritis, including its definition, etiology, pathology, clinical features, diagnosis, and treatment. Some key points:
- Optic neuritis is an inflammatory condition of the optic nerve that can cause visual loss. Common causes include multiple sclerosis, infections, and autoimmune disorders.
- Clinical features include sudden visual loss or blurring in one eye, pain with eye movement, and abnormal pupil response to light. Diagnosis is made based on symptoms and MRI findings.
- Treatment involves corticosteroids via IV or oral administration. The Optic Neuritis Treatment Trial found IV methylprednisolone can help delay conversion to multiple sclerosis.
This document provides information on optic atrophy, including:
1. It defines optic atrophy as the permanent loss of retinal ganglion cell axons and death of these cells, clinically manifesting as changes in the optic disc color and structure and variable visual dysfunction.
2. It describes the anatomy and visual pathway of the optic nerve, noting it has over 1 million axons originating from the retina.
3. It discusses the various classifications, causes, pathological features, and appearances of primary, secondary, consecutive, and glaucomatous optic atrophy based on histopathological and ophthalmoscopic findings.
Choroidal neovascular membranes (CNVM)Md Riyaj Ali
ย
Choroidal neovascularization (CNV) involves the abnormal growth of new blood vessels from the choroid layer of the eye through Bruch's membrane. This can cause vision loss and is a common cause of wet macular degeneration. CNV occurs due to alterations in Bruch's membrane and high levels of vascular endothelial growth factor. It is classified based on its location relative to the retinal pigment epithelium and fovea. Symptoms include sudden vision loss and visual distortions. CNV is diagnosed through imaging like optical coherence tomography and fluorescein angiography and treated with injections of anti-VEGF drugs to inhibit blood vessel growth.
Ischemic condition affecting the eye.
The ischemia can occur secondary to systemically problem [or] particulary the eye.
Many retinal vascular disorders {like CRAO,CRVO,Diabetic retinopathy,Hypertensive Retinopathy} shows ischemic signs.
This document provides an overview of different types of corneal dystrophies, including their classification, clinical features, histopathology, and management. It discusses epithelial and subepithelial dystrophies, corneal dystrophies of Bowman's layer, stromal corneal dystrophies, and Descemet membrane and endothelial dystrophies. The key points are that corneal dystrophies are inherited, bilateral, and slowly progressive disorders that begin early in life and are characterized by corneal opacification without relationship to environmental factors. Diagnosis involves classification based on the anatomical layer affected and treatment typically involves managing symptoms although surgery may be needed if vision is impaired.
This document provides an overview of the optic nerve and various optic neuropathies, including:
- The general structure of the optic nerve and signs of dysfunction like reduced vision and visual field defects.
- A classification of optic neuropathies including inflammatory, glaucomatous, traumatic, hereditary, and ischemic types.
- Descriptions of specific conditions like papillitis, NAION, Leber's hereditary optic neuropathy, and various congenital optic disc abnormalities.
- Details on infectious and non-infectious optic neuritis, including symptoms, signs, and etiologies.
This document discusses Coats' disease, a rare eye condition characterized by abnormal blood vessels in the retina. It presents in children, more often in boys than girls, and causes vision loss. Symptoms include blurred vision and eye swelling. Examination shows leaking blood vessels, fluid buildup, and retinal detachment. Treatment depends on the stage, ranging from close monitoring to laser therapy, cryotherapy, surgery, and in severe cases, eye removal. The goal is to preserve vision or the eye's structure.
It describes about the procedure of Hess charting. it serves as a great tool to understand the concepts involved. Suitable for optometry course. This is not a routine procedure but an important procedure which is used in diagnosis.
The document discusses optic neuritis, including its causes, symptoms, diagnosis, and treatment. Specifically, it notes that optic neuritis is characterized by loss of central vision, visual acuity, and color perception, along with an afferent pupil defect. It can be caused by conditions like multiple sclerosis, infections, granulomatous diseases, and others. Diagnosis involves visual field testing, color vision testing, and MRI imaging of the optic nerve. Treatment focuses on corticosteroids to reduce inflammation acutely and prevent future attacks.
This document provides information on hereditary macular dystrophies and macular function tests. It begins by describing the anatomical landmarks of the macula, including the fovea and foveola. It then discusses psychophysical macular function tests such as visual acuity testing, color vision testing, photostress testing, and Amsler grid testing. The document also covers electrophysiological tests like electroretinography (ERG) which objectively measures retinal electrical activity in response to light. ERG testing analyzes the a-wave from photoreceptors and b-wave from bipolar cells.
This document discusses exodeviations (divergent strabismus), which occurs when the visual axis is deviated laterally and the fovea is rotated nasally. Exodeviations can be comitant or incomitant. Comitant exodeviations include infantile exotropia, intermittent exotropia, and sensory exotropia. Incomitant exodeviations include paralytic, restrictive, and musculofascial innervational anomalies. Treatment options depend on the type of exodeviation and include non-surgical approaches like optical treatment and orthoptic exercises or surgical approaches like lateral rectus recession and medial rectus resection.
Retinoschisis is a splitting of the neurosensory retina into inner and outer layers, causing visual field defects. Senile retinoschisis occurs in 5% of people over 20 and presents as bilateral, peripheral retinal elevations that may progress circumferentially. Juvenile retinoschisis is an X-linked condition causing macular schisis and peripheral retinoschisis from birth, leading to progressive vision loss over decades. Both types are generally asymptomatic aside from visual field defects but may develop complications like retinal detachment, vitreous hemorrhage, or neovascularization. Diagnosis involves OCT, FA, and ERG and management focuses on complications or calcium channel blockers for macular schisis
Uveitis is a general term for intraocular inflammation that does not indicate the specific site or cause of inflammation. It can be caused by autoimmune or infectious processes. Uveitis is a common cause of visual impairment and blindness worldwide. It is classified based on the site of inflammation - anterior, intermediate, posterior or panuveitis. Developing a differential diagnosis involves considering factors such as acuity of onset, laterality, associated symptoms and response to previous therapies. Common etiologies include idiopathic disease, infections like tuberculosis, and autoimmune diseases like sarcoidosis and Behcet's disease. Treatment involves corticosteroids and immunosuppressive therapies.
An epiretinal membrane is an avascular fibrocellular membrane that grows on the inner surface of the retina, causing macular dysfunction. It consists of various cell types and collagen. Symptoms include blurry vision and metamorphopsia. Observation is usually sufficient for mild cases, but surgery is recommended for significant vision loss or distortion. Peeling the membrane improves vision in most cases, though cataracts are a common complication. Prognosis is better when pre-op vision is good and the duration of symptoms is short.
Optic atrophy refers to changes in the optic nerve resulting from axonal degeneration between the retina and lateral geniculate body, causing visual disturbance and changes in the optic nerve head appearance. It can be classified as primary, secondary, or consecutive. Primary optic atrophy occurs without prior nerve swelling and may result from lesions along the visual pathway. Secondary optic atrophy is preceded by long-term nerve swelling and includes causes like chronic papilledema. Consecutive optic atrophy is caused by diseases of the inner retina or its blood supply. Neuroretinitis refers to optic neuritis with retinal inflammation, most commonly caused by cat scratch fever, and presents with papillitis, macular edema, and sometimes a macular
This document provides an overview of optic atrophy, including:
1. It defines optic atrophy as degeneration of the optic nerve due to damage to the visual pathways from the retina to the lateral geniculate body.
2. It classifies optic atrophy based on whether damage originates in the retina or more centrally, and by cause. Primary optic atrophy occurs without swelling, while secondary involves prior swelling.
3. Causes of primary optic atrophy include optic neuritis, compression, hereditary conditions, toxins, trauma, and multiple sclerosis. Secondary optic atrophy follows conditions like papilledema.
4. Treatment focuses on the underlying cause, with vitamins sometimes used
Primary optic atrophy occurs due to direct damage to the optic nerve and results in chalky white disc color with well defined margins and normal cupping and vessels. Secondary optic atrophy follows conditions like papilledema that cause swelling first, resulting in a filled cup and dirty white color. Consecutive optic atrophy occurs after other retinal conditions and shows waxy pallor, normal cup and grossly thinned vessels.
The document discusses various ocular manifestations of systemic diseases. It describes eye complications that can arise from conditions like diabetes mellitus, vitamin deficiencies, endocrine disorders of the pituitary, thyroid and pineal glands, kidney disease, temporal arteritis, rheumatoid arthritis, tuberculosis, syphilis, sarcoidosis and myasthenia gravis. Common signs include conjunctivitis, uveitis, optic neuritis, cataracts, retinal damage, exophthalmos and ocular muscle palsies. The eye can provide important clues to underlying metabolic and systemic illnesses.
Optic atrophy refers to degeneration of the optic nerve resulting in vision loss and changes in the appearance of the optic disc. It can be primary, secondary, consecutive, or glaucomatous. Primary optic atrophy is caused by lesions along the visual pathway and results in a chalky white disc. Secondary optic atrophy follows optic nerve swelling and has a dirty grey-white appearance. Consecutive optic atrophy is caused by retinal or choroidal disease and leaves a waxy pallor. Glaucomatous optic atrophy is characterized by deep cupping of the disc. Diagnosis involves imaging and visual field testing while treatment focuses on the underlying cause.
This document discusses the evaluation and management of sudden visual loss. It begins by distinguishing between acute transient visual loss lasting less than 24 hours and acute persistent visual loss lasting at least 24 hours. Important aspects of the history and examination are outlined. Causes of visual loss are then categorized as media problems, retinal problems, neural pathway problems, and psychogenic problems. Specific conditions are described within each category along with distinguishing examination findings and appropriate management. Immediate treatment is recommended for conditions such as central retinal artery occlusion and acute angle closure glaucoma, while other conditions require emergent or urgent referral.
The presentation was made under the wise guidance of my professor DR.(prof) P. Rawat (MGMMC & M.Y. HOSPITAL, INDORE).It covers the essential aspects of optic neuritis & optic atrophy.
Optic neuritis is inflammation of the optic nerve that causes sudden vision loss. It can be caused by multiple sclerosis in about 50% of cases. Common symptoms include blurred or decreased vision. Examination typically shows a normal optic disc initially with other signs of nerve dysfunction. MRI often reveals white matter lesions. Treatment involves steroids to reduce inflammation and speed recovery of vision. Prognosis is generally good with over 90% recovering good vision, but some permanent vision or color vision issues can remain.
Optic atrophy refers to damage to the optic nerve resulting in loss of retinal ganglion cells and their axons. It can be primary, secondary, consecutive, or glaucomatous. Primary optic atrophy results directly from injury to the retinal ganglion cell or axon. Secondary optic atrophy occurs due to severe disc edema, inflammation, or long-standing orbital inflammation. Consecutive optic atrophy is due to retinal disease destroying ganglion cells. Glaucomatous optic atrophy is characterized by cupping and excavation of the optic disc. Toxic or nutritional optic neuropathies can result from substance exposure, deficiencies, or abuse and present with central vision loss, but are sometimes reversible if the cause
Optic atrophy is the permanent loss of retinal ganglion cell axons and death of these cells, resulting in changes to the optic disc such as pallor. It has many potential causes, including diseases that damage the optic nerve or retina. On examination, patients with optic atrophy typically have reduced visual acuity and color vision, as well as an afferent pupillary defect. The optic disc appears pale on ophthalmoscopy.
Coloboma of the optic disc results from a failure in closure of the embryonic fissure. Medullated nerve fibers represent myelination of retinal nerve fibers that normally proceeds from the brain downwards but stops at the lamina cribrosa. Persistent hyaloid artery congenital remnants can take different forms like Bergmester's papilla or a vascular loop in the vitreous. Optic neuritis includes inflammatory and demyelinating disorders of the optic nerve that can be idiopathic, infectious, or toxic in etiology. Papilloedema is optic disc swelling associated with increased intracranial pressure that is usually bilateral.
This document discusses various conditions that affect the pupil, including Adie's tonic pupil, Argyll Robertson pupils, and pituitary adenomas. Adie's tonic pupil is caused by damage to the ciliary ganglion and results in a dilated, poorly reactive pupil. Argyll Robertson pupils are caused by neurosyphilis and show a dissociation between the light and near reflexes. Pituitary adenomas are tumors of the pituitary gland that can compress the optic chiasm and cause visual field defects such as bitemporal hemianopia. MRI is useful for evaluating these conditions.
this presentation is about causes of acute visual loss which i made for my seminar during ophthalmology posting.Hope that people can had a benefit from this slide especially medical student.
Gradual vision loss is caused by many conditions that develop over weeks to years. The most common causes are age-related macular degeneration, cataracts, glaucoma, diabetic retinopathy, and refractive errors. A thorough history and eye exam can help identify the cause by examining symptoms, visual acuity, the retina, and optic nerve. Treatment depends on the specific condition but may include eye drops, laser therapy, surgery, or lifestyle changes.
OPTIC NEURITIS
DR.RAKESH K.CHAHAR
RESIDENT 3rd YEAR
Optic neuritis is inflammation of theย optic nerve,caused by damage to and loss of the protective sheath ( myelin ) surrounding this nerve that is so vital for good vision.ย
JLN MC,AJMER
DISEASES OF THE RETINA - COGENITAL,VASCULAR,ALLPREETHABALAJI21
ย
1. The document discusses various congenital and developmental disorders of the retina including anomalies of the optic disc, nerve fibers, and vascular elements.
2. Specific conditions covered include drusen, situs inversus, hypoplasia, aplasia, and coloboma. Inflammatory disorders of the retina such as retinitis, chorioretinitis, and retinal vasculitis from various etiologies are also discussed.
3. Common vascular disorders of the retina like retinal artery occlusions, retinal vein occlusions, diabetic retinopathy, and sickle cell retinopathy are reviewed in detail.
This document discusses different classifications and etiologies of optic neuritis. Optic neuritis can be classified ophthalmoscopically as retrobulbar neuritis, papillitis, or neuroretinitis. It can also be classified etiologically as demyelinating, parainfectious, infective, or autoimmune. Demyelinating optic neuritis is most common and is often associated with multiple sclerosis. Symptoms include monocular visual impairment and eye pain that typically improves over several weeks. Treatment may involve steroids to speed recovery in severe cases.
Clinical approach to optic neuropathies dove med pressneurophq8
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This document provides an overview of the clinical approach to diagnosing various types of optic neuropathies. It discusses the importance of obtaining a thorough history and performing a neuro-ophthalmic examination to identify signs of optic neuropathy. Ancillary testing like visual field testing, electrophysiology, and optical coherence tomography can aid diagnosis. The document then reviews the diagnostic criteria and approach to specific optic neuropathies like acute demyelinating optic neuritis.
The document discusses various neurologic eye diseases that affect the visual pathway, including:
1. Optic neuritis, which is inflammation of the optic nerve and can be caused by infections, tumors, or autoimmune diseases like multiple sclerosis.
2. Anterior ischemic optic neuropathy (AION), which occurs when blood flow to the front part of the optic nerve is reduced and can be either arteritic or non-arteritic.
3. Leber's hereditary optic neuropathy (LHON), a genetic mitochondrial condition causing vision loss in young males through retinal ganglion cell death.
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(๐๐๐ ๐๐๐) (๐๐๐ฌ๐ฌ๐จ๐ง ๐)-๐๐ซ๐๐ฅ๐ข๐ฆ๐ฌ
๐๐ข๐ฌ๐๐ฎ๐ฌ๐ฌ ๐ญ๐ก๐ ๐๐๐ ๐๐ฎ๐ซ๐ซ๐ข๐๐ฎ๐ฅ๐ฎ๐ฆ ๐ข๐ง ๐ญ๐ก๐ ๐๐ก๐ข๐ฅ๐ข๐ฉ๐ฉ๐ข๐ง๐๐ฌ:
- Understand the goals and objectives of the Edukasyong Pantahanan at Pangkabuhayan (EPP) curriculum, recognizing its importance in fostering practical life skills and values among students. Students will also be able to identify the key components and subjects covered, such as agriculture, home economics, industrial arts, and information and communication technology.
๐๐ฑ๐ฉ๐ฅ๐๐ข๐ง ๐ญ๐ก๐ ๐๐๐ญ๐ฎ๐ซ๐ ๐๐ง๐ ๐๐๐จ๐ฉ๐ ๐จ๐ ๐๐ง ๐๐ง๐ญ๐ซ๐๐ฉ๐ซ๐๐ง๐๐ฎ๐ซ:
-Define entrepreneurship, distinguishing it from general business activities by emphasizing its focus on innovation, risk-taking, and value creation. Students will describe the characteristics and traits of successful entrepreneurs, including their roles and responsibilities, and discuss the broader economic and social impacts of entrepreneurial activities on both local and global scales.
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The recent surge in pro-Palestine student activism has prompted significant responses from universities, ranging from negotiations and divestment commitments to increased transparency about investments in companies supporting the war on Gaza. This activism has led to the cessation of student encampments but also highlighted the substantial sacrifices made by students, including academic disruptions and personal risks. The primary drivers of these protests are poor university administration, lack of transparency, and inadequate communication between officials and students. This study examines the profound emotional, psychological, and professional impacts on students engaged in pro-Palestine protests, focusing on Generation Z's (Gen-Z) activism dynamics. This paper explores the significant sacrifices made by these students and even the professors supporting the pro-Palestine movement, with a focus on recent global movements. Through an in-depth analysis of printed and electronic media, the study examines the impacts of these sacrifices on the academic and personal lives of those involved. The paper highlights examples from various universities, demonstrating student activism's long-term and short-term effects, including disciplinary actions, social backlash, and career implications. The researchers also explore the broader implications of student sacrifices. The findings reveal that these sacrifices are driven by a profound commitment to justice and human rights, and are influenced by the increasing availability of information, peer interactions, and personal convictions. The study also discusses the broader implications of this activism, comparing it to historical precedents and assessing its potential to influence policy and public opinion. The emotional and psychological toll on student activists is significant, but their sense of purpose and community support mitigates some of these challenges. However, the researchers call for acknowledging the broader Impact of these sacrifices on the future global movement of FreePalestine.
This presentation was provided by Rebecca Benner, Ph.D., of the American Society of Anesthesiologists, for the second session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session Two: 'Expanding Pathways to Publishing Careers,' was held June 13, 2024.
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In this presentation, we will explore how barcodes can be leveraged within Odoo 17 to streamline our manufacturing processes. We will cover the configuration steps, how to utilize barcodes in different manufacturing scenarios, and the overall benefits of implementing this technology.
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A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
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In this webinar, participants learned how to utilize Generative AI to streamline operations and elevate member engagement. Amazon Web Service experts provided a customer specific use cases and dived into low/no-code tools that are quick and easy to deploy through Amazon Web Service (AWS.)
2. ๏ต Papillitis is disk swelling caused by inflammation at the nerve
head (intraocular optic nerve).
๏ต Cause:
๏ต Opticneuritis
๏ต multiplesclerosis
๏ต Loss of vision is the cardinal symptom of optic neuritis and is
particularly useful in differentiating papillitis from papilledema
Papillitis
3.
4.
5.
6. Optic Atrophy
โข Introduction
Optic atrophy refers to the late stage changes that take place in the
optic nerve resulting from axonal degeneration in the pathway between
the retina and the lateral geniculate body, manifesting with disturbance
in visual function and in the appearance of the optic nerve head.
It can be classified in several ways,
๏. including by whether axonal death is initiated in the retina
(anterograde)
๏or more centrally (retrograde), and by cause.
๏Optic โatrophyโ is not true atrophy, a term that strictly refers to
involutional change secondary to lack of use.
7. Primary Optic Atrophy
๏ Primary optic atrophy
๏ Primary optic atrophy occurs without antecedent
swelling of the optic nerve head.
๏ It may be caused by lesions affecting the visual pathways at any point
from the retrolaminar portion of the optic nerve to the lateral geniculate
body.
๏ Lesions anterior to the optic chiasm result in unilateral optic atrophy,
whereas those involving the chiasm and optic tract will cause bilateral
changes.
8. โข Signs:
โข Flat white disc with clearly delineated margins.
โข Reduction in the number of small blood vessels on the disc surface.
โข Attenuationofperipapillarybloodvesselsand thinning of the retinal
nerve fibre layer (RNFL).
โข The atrophy may be diffuse or sectoral depending on the cause and
level of the lesion.
โข Temporal pallor of the optic nerve head may indicate atrophy of
fibres of the papillomacular bundle, and is classically seen following
demyelinating optic neuritis.
โข Band atrophy is a similar phenomenon caused by involvement of
the fibres entering the optic disc nasally and temporally; it occurs in
lesions of the optic chiasm or tract and gives nasal as well as
temporal.
9.
10. โข Important causes
Optic neuritis.
Compression by tumours and aneurysms. Hereditary optic neuropathies.
Toxic and nutritional optic neuropathies; these may give temporal pallor, pa
Trauma.
11. Secondary optic atrophy
Secondary optic atrophy is preceded by long-standing swelling of the
optic nerve head.
โข Signs vary according to the cause and its course.
Slightly or moderately raised white or greyish disc with poorly
delineated margins due to gliosis.
Obscuration of the lamina cribrosa.
Reduction in the number of small blood vessels on the disc surface.
Peripapillary circumferential retinochoroidal folds, especially temporal
to the disc (Paton lines โC), sheathing of arterioles and venous
tortuosity may be
12. Causes
๏ Include
๏ chronic papilloedema,
๏ anteriorischaemicopticneuropathy ๏ papillitis.
๏ Intraocular inflammatory causes of marked disc swelling are
sometimes considered to cause secondary rather than consecutive
atrophy.
13. Consecutive optic atrophy
๏ Consecutive optic atrophy is caused by disease of the inner retina or
its blood supply.
๏ The cause is usually obvious on fundus examination,
๏ e.g. extensive retinal photocoagulation, retinitis pigmentosa or prior
central retinal artery occlusion.
๏ The disc appears waxy, with reasonably preserved architecture
consecutive due to vasculitis
14. ๏ Neuroretinitis refers to the combination of optic neuritis and signs of
retinal, usually macular, inflammation.
๏ Cat-scratch fever is responsible for 60% of cases.
๏ About 25% of cases are idiopathic (Leber
idiopathic stellate neuroretinitis).
๏ Other notable causes include syphilis, Lyme disease, mumps and
leptospirosis.
Neuroretinitis
15. Diagnosis:
Symptoms:
Painless unilateral visual impairment, usually gradually worsening over
about a week.
Signs:
โข VA is impaired to a variable degree.
โข Signs of optic nerve dysfunction are usually mild or absent, as visual
loss is largely due to macular involvement.
โข Papillitis associated with peripapillary and macular oedema
โข A macular star typically appears as disc swelling settles; the macular
star resolves with a return to normal or near-normal visual acuity over
6โ12 months.
โข Venous engorgement and splinter haemorrhages may be present in
severe case.
โข Fellow eye involvement occasionally develops.
16.
17. Optical coherence tomography (OCT) demonstrates sub- and
intraretinal fluid to a variable extent.
Fluorescein angiography (FA) shows diffuse leakage from superficial
disc vessels.
Blood tests may include serology for Bartonella and other causes
according to clinical suspicion
Treatment
This is specific to the cause, and often consists of antibiotics.
Recurrent idiopathic cases may require treatment with steroids and/or
other immunosuppressants.
Investigation and Treatment