Having previously been turned away as an unsuitable candidate for laser eye surgery, Linda Lusardi, 51, finally underwent the procedure at the London Vision Clinic and is delighted with the results.
E-residency, data embassy and the CloudAndres Kütt
Estonia is about to become the first truly digital society. This deck, supporting a speech at the TopConf Tallinn 2014 conference, points out reasoning behind the endeavour and technical challenges met to date.
Este documento habla sobre la importancia de tomar control de tu huella y reputación digitales en un mundo donde la mayoría de usuarios acceden a Internet a través de dispositivos móviles. Recomienda monitorear tus propiedades digitales como redes sociales y sitios web para administrar tu imagen online, y compartir conocimiento a través de plataformas como SlideShare, Twitter y LinkedIn para multiplicarlo.
Ocular dominance refers to the tendency to prefer visual input from one eye over the other. It is determined by tests like the Miles test, where a person views a distant object through a small opening with both eyes and then closes each eye to see which eye continues viewing the object. Knowing one's ocular dominance is important for sports that require accurate aiming or peripheral awareness, as people may rely too heavily on their dominant eye. While some think cross-dominance may be advantageous for side-stance sports, studies have not confirmed this.
Este documento describe la cirugía refractiva Presbyond para la presbicia. Presbyond induce una micromonovisión mediante la creación de una aberración esférica en un ojo para ver de cerca y el otro para ver de lejos, aprovechando la capacidad del cerebro para fusionar las imágenes. Esto permite una visión clara para distancia, intermedia y cercana sin pérdida de estereopsis u otros efectos secundarios. La cirugía es rápida, reversible y ofrece una alta tasa de éxito.
Dr. Pait Teesalu underwent laser blended vision surgery to correct his -4.00D nearsightedness in both eyes. He was performing over 1,500 cataract surgeries per year and found wearing glasses inconvenient in the operating room. After researching different refractive surgery options, he chose laser blended vision which uses a nonlinear ablation profile to increase depth of field and allow for spectacle-free vision for many years. Over two years post-surgery, his vision remains excellent with 0.00 -0.25 prescription in both eyes and he can still read small print up close. He is convinced laser blended vision will keep him spectacle-free for reading for at least 10 more years.
This document discusses various eye conditions and their treatments. It covers myopia, hyperopia, astigmatism and presbyopia. For presbyopia, it explains the age-related loss of elasticity in the lens and treatments like bifocal glasses. It also discusses cataracts, how they increase with age, and treating them by removing the lens and implanting an IOL. The document concludes with an overview of diabetic retinopathy, how it affects vision compared to normal eyes, and its effects over time.
E-residency, data embassy and the CloudAndres Kütt
Estonia is about to become the first truly digital society. This deck, supporting a speech at the TopConf Tallinn 2014 conference, points out reasoning behind the endeavour and technical challenges met to date.
Este documento habla sobre la importancia de tomar control de tu huella y reputación digitales en un mundo donde la mayoría de usuarios acceden a Internet a través de dispositivos móviles. Recomienda monitorear tus propiedades digitales como redes sociales y sitios web para administrar tu imagen online, y compartir conocimiento a través de plataformas como SlideShare, Twitter y LinkedIn para multiplicarlo.
Ocular dominance refers to the tendency to prefer visual input from one eye over the other. It is determined by tests like the Miles test, where a person views a distant object through a small opening with both eyes and then closes each eye to see which eye continues viewing the object. Knowing one's ocular dominance is important for sports that require accurate aiming or peripheral awareness, as people may rely too heavily on their dominant eye. While some think cross-dominance may be advantageous for side-stance sports, studies have not confirmed this.
Este documento describe la cirugía refractiva Presbyond para la presbicia. Presbyond induce una micromonovisión mediante la creación de una aberración esférica en un ojo para ver de cerca y el otro para ver de lejos, aprovechando la capacidad del cerebro para fusionar las imágenes. Esto permite una visión clara para distancia, intermedia y cercana sin pérdida de estereopsis u otros efectos secundarios. La cirugía es rápida, reversible y ofrece una alta tasa de éxito.
Dr. Pait Teesalu underwent laser blended vision surgery to correct his -4.00D nearsightedness in both eyes. He was performing over 1,500 cataract surgeries per year and found wearing glasses inconvenient in the operating room. After researching different refractive surgery options, he chose laser blended vision which uses a nonlinear ablation profile to increase depth of field and allow for spectacle-free vision for many years. Over two years post-surgery, his vision remains excellent with 0.00 -0.25 prescription in both eyes and he can still read small print up close. He is convinced laser blended vision will keep him spectacle-free for reading for at least 10 more years.
This document discusses various eye conditions and their treatments. It covers myopia, hyperopia, astigmatism and presbyopia. For presbyopia, it explains the age-related loss of elasticity in the lens and treatments like bifocal glasses. It also discusses cataracts, how they increase with age, and treating them by removing the lens and implanting an IOL. The document concludes with an overview of diabetic retinopathy, how it affects vision compared to normal eyes, and its effects over time.
Blended marketing & Digital Strategy & Marketing Integrado 360ºRaquel Ayestarán
En cualquier estrategia, empresarial, corporativa, de marketing o comunicación, se han de fijar unos objetivos claros, concisos, concretos y sobre todo, mensurables.
Sin ESTRATEGIA, no hay ROI. Retorno Óptimi de Ingreso.
Por otra parte, no hay que estar en la web social de cualquier manera. Ni, por supuesto, aplicando mecanismos clásicos – sin la adaptación pertinente -, o técnicas y herramientas propias anteriores a esta clase de comunicación bidireccional.
sin una estrategia que contemple OFF/ON no existe el ROI para la marca.
In any strategy, of whatever nature, whether business, corporate, marketing or communication, are to set clear targets, concise, concrete, and above all, measurable.
Without a strategy, there is no ROI.
Moreover, we should not be in the social web anyway. Neither, of course, applying classical mechanisms - without appropriate adaptation - or own techniques and tools before this kind of two-way communication.
without a strategy that includes OFF / ON no ROI for the brand.
This document discusses presbyopia, an age-related condition that results in a decreased ability to focus on near objects. It defines different types of presbyopia and discusses its epidemiology and clinical background. The main points are:
1. Presbyopia is caused by a gradual loss of accommodation, or ability to focus, as the lens hardens with age. It affects near vision and can cause functional disability without correction.
2. It is classified into stages from incipient to absolute based on symptoms and accommodation ability. Risk factors include age, hyperopia, occupation, gender, ocular/systemic disease, drugs, and geography.
3. The natural history and mechanisms behind presbyopia
This document discusses presbyopia and various options for correcting or managing it. It begins by explaining what presbyopia is and how it affects vision starting around age 40. It then describes several methods for correcting presbyopia including glasses, contact lenses, laser surgery, and intraocular lenses. It also discusses potential benefits and drawbacks of each method. Finally, it outlines some eye exercises recommended by William Bates in the early 20th century for potentially delaying or reducing the effects of presbyopia without glasses.
This document discusses astigmatism, presbyopia, and aphakia. It defines these conditions and describes their causes, symptoms, diagnosis, and treatment options. For astigmatism, it covers the different types including regular and irregular astigmatism. It discusses tests like keratometry and retinoscopy. Treatment includes optical correction with lenses, refractive surgery procedures, and intraocular lenses. For presbyopia, it defines the condition as age-related loss of accommodation. Symptoms and onset with age are described. Treatment involves optical correction with single vision, bifocal, or multifocal lenses as well as contact lenses and refractive surgery options.
Seminar 1 ophthal refractive error and cataractMohd Hanafi
This document provides information on refractive errors, cataracts, and their treatment. It discusses the types of refractive errors including emmetropia, myopia, hypermetropia, and presbyopia. It describes what causes cataracts, the different types including senile and diabetic cataracts, and symptoms and signs. Treatment options covered include temporary management techniques as well as definitive surgical options like extracapsular cataract extraction and phacoemulsification. Potential complications of cataract surgery and their management are also outlined.
This document discusses cataracts and presbyopia, as well as treatment options performed by Dr. Helga Fuenfhausen Pizio. A cataract is a clouding of the eye's lens that causes vision problems and is common in older adults. Symptoms include blurry or faded vision. Surgery is the only treatment and involves removing the clouded lens and replacing it with an artificial lens. For presbyopia, which causes near vision issues, multifocal lenses can provide both near and distance vision after cataract surgery without glasses. Dr. Pizio performs cataract surgery using small incisions and ultrasound and was the first in Nevada to implant a new multifocal lens.
Case presentation-congenital & developmental cataractSivarathana
This document summarizes the case presentation of a 15-year-old female student who underwent cataract surgery in her right eye 2 years ago. Her previous prescription showed mild hyperopia and astigmatism. On examination, her best corrected vision was 6/6 and her refraction showed mild residual hyperopia and astigmatism. She was diagnosed with pseudophakia and prescribed bifocal glasses. The document then provides background information on different types of cataracts, their causes, signs, symptoms, management including surgery and optical correction options.
The document discusses refractive surgery procedures for correcting vision, including LASIK, PRK, and lens implants. It describes how each procedure works to reshape the cornea and lens to reduce nearsightedness, farsightedness, and astigmatism. The risks are generally low but include infection, glare, and gradual refractive change over decades. The benefits are improved vision, though not necessarily perfect vision. Costs typically range from $1000 to $2500 per eye.
This document provides an overview of modern options for correcting presbyopia. It discusses both static and dynamic correction techniques. Static techniques include glasses, contact lenses, corneal procedures like inlays/onlays, and intraocular lenses using monovision or being multifocal. Dynamic techniques aim to restore accommodation and include accommodating intraocular lenses, lens refilling procedures, and scleral expansion techniques. The document provides details on many of these specific procedures.
This document summarizes a technique called Laser Blended Vision for treating presbyopia using a customized laser procedure. It operates through 8 mechanisms including monovision, increased depth of field, and neural processing in the brain. Clinical results show high patient satisfaction and visual outcomes for distance, intermediate, and near vision without glasses for patients with myopia, hyperopia, and emmetropia. Complications were low.
Presbyopia is an age-related condition where the eye's ability to focus on near objects progressively diminishes. It is caused by a loss of elasticity in the crystalline lens as one ages. The first signs are difficulty reading or doing close work, especially in low light, as images blur closer than 25cm from the eyes. Examination shows normal eyes and refraction reveals the need for a near vision correction, usually +1 to +2.5 added to any existing prescription for distance. Treatment involves using bifocal or two pairs of glasses, one for distance and one with a near prescription added.
Este documento discute el futuro de la cirugía de la presbicia. Actualmente existen varias opciones para tratar la presbicia, incluyendo cirugía láser en la córnea, implantes intraestromales y lentes intraoculares. En el futuro, es posible que se desarrollen nuevas tecnologías como lentes intraoculares de asfericidad variable y procedimientos láser más avanzados en la córnea para restaurar la acomodación. El éxito de estos procedimientos dependerá de criterios como la eficacia, seg
case presentation on presbyopia.age related changes in accommodation.types of presbyopia.theories of presbyopia.management options.age-related additions
Presbyopia is the age-related loss of accommodation due to reduced elasticity and flexibility of the lens. It begins in the 40s and progresses until complete loss of accommodation in the 50s-60s. Theories explain it is caused by reduced ciliary muscle contraction and increased lens diameter with age. Symptoms include difficulty with near vision, especially in low light. Treatments include reading glasses, contact lenses, and refractive surgeries like LASIK, conductive keratoplasty, and multifocal lenses. The goal is to improve near vision while maintaining good distance vision.
Ponencia presentada por el Dr. Rementería en la 6ª Jornada Catarata+ organizada por el Servicio Oftalmologico del Hospital San Rafael de Madrid.
+info: http://www.cirugiaocular.com
Presbyopia is the loss of accommodation ability that occurs with aging. It results from a loss of elasticity in the lens and ciliary muscles. By age 40-45, most people experience difficulty seeing objects close up. Symptoms include problems with near vision that are worse in low light. It is diagnosed by reduced amplitude of accommodation. Treatment involves using reading glasses, bifocals, or progressive lenses to add the needed optical power for near vision. Multifocal contact lenses and refractive surgery can also help treat presbyopia.
This document discusses the development of laser-assisted in situ keratomileusis (LASIK) ablation profiles for treating high myopia. Early profiles caused problems like increased spherical aberration and night vision disturbances when treating higher refractive errors. Researchers optimized profiles by using larger optical zones, incorporating aspheric designs, and accounting for biomechanical factors. However, high corrections still induced spherical aberration due to limits of corneal thickness. Wavefront-guided LASIK was explored as a method to treat spherical aberration induced by ablation.
This document discusses the development of new ablation profiles for treating very high myopia using LASIK. It describes how early profiles induced spherical aberration and night vision disturbances. The author developed profiles that use larger optical zones and incorporate asphericity to reduce aberrations. Challenges included controlling spherical aberration induction and limiting flap thickness. New hybrid aspheric profiles and femtosecond lasers allow treating higher levels of myopia with good accuracy and low rates of side effects like night vision disturbances.
Professor Dan Reinstein is a leading eye surgeon who specializes in laser eye surgery. He discusses how laser eye surgery can provide crystal clear vision without glasses. The quick 15 minute procedure uses a laser to reshape the cornea and provide lasting effects. He advises seeking out facts from reputable clinics and considering laser eye surgery as it can improve lives. The clinic stays ahead through dedicated research and developing innovative new technologies for laser eye treatments.
Professor Dan Reinstein is a renowned laser eye surgeon who argues that glasses and contact lenses are unnecessary and that laser eye surgery is a safe alternative that provides perfect vision. The article describes the author's own positive experience with Reinstein's laser eye surgery, which took 10 minutes per eye and required only a short recovery period. While laser eye surgery was initially controversial, it is now widely available and regulated, with risks being very small if the correct surgeon is chosen. Reinstein asserts that most people are candidates for the procedure and that the biggest barrier is simply fear.
Blended marketing & Digital Strategy & Marketing Integrado 360ºRaquel Ayestarán
En cualquier estrategia, empresarial, corporativa, de marketing o comunicación, se han de fijar unos objetivos claros, concisos, concretos y sobre todo, mensurables.
Sin ESTRATEGIA, no hay ROI. Retorno Óptimi de Ingreso.
Por otra parte, no hay que estar en la web social de cualquier manera. Ni, por supuesto, aplicando mecanismos clásicos – sin la adaptación pertinente -, o técnicas y herramientas propias anteriores a esta clase de comunicación bidireccional.
sin una estrategia que contemple OFF/ON no existe el ROI para la marca.
In any strategy, of whatever nature, whether business, corporate, marketing or communication, are to set clear targets, concise, concrete, and above all, measurable.
Without a strategy, there is no ROI.
Moreover, we should not be in the social web anyway. Neither, of course, applying classical mechanisms - without appropriate adaptation - or own techniques and tools before this kind of two-way communication.
without a strategy that includes OFF / ON no ROI for the brand.
This document discusses presbyopia, an age-related condition that results in a decreased ability to focus on near objects. It defines different types of presbyopia and discusses its epidemiology and clinical background. The main points are:
1. Presbyopia is caused by a gradual loss of accommodation, or ability to focus, as the lens hardens with age. It affects near vision and can cause functional disability without correction.
2. It is classified into stages from incipient to absolute based on symptoms and accommodation ability. Risk factors include age, hyperopia, occupation, gender, ocular/systemic disease, drugs, and geography.
3. The natural history and mechanisms behind presbyopia
This document discusses presbyopia and various options for correcting or managing it. It begins by explaining what presbyopia is and how it affects vision starting around age 40. It then describes several methods for correcting presbyopia including glasses, contact lenses, laser surgery, and intraocular lenses. It also discusses potential benefits and drawbacks of each method. Finally, it outlines some eye exercises recommended by William Bates in the early 20th century for potentially delaying or reducing the effects of presbyopia without glasses.
This document discusses astigmatism, presbyopia, and aphakia. It defines these conditions and describes their causes, symptoms, diagnosis, and treatment options. For astigmatism, it covers the different types including regular and irregular astigmatism. It discusses tests like keratometry and retinoscopy. Treatment includes optical correction with lenses, refractive surgery procedures, and intraocular lenses. For presbyopia, it defines the condition as age-related loss of accommodation. Symptoms and onset with age are described. Treatment involves optical correction with single vision, bifocal, or multifocal lenses as well as contact lenses and refractive surgery options.
Seminar 1 ophthal refractive error and cataractMohd Hanafi
This document provides information on refractive errors, cataracts, and their treatment. It discusses the types of refractive errors including emmetropia, myopia, hypermetropia, and presbyopia. It describes what causes cataracts, the different types including senile and diabetic cataracts, and symptoms and signs. Treatment options covered include temporary management techniques as well as definitive surgical options like extracapsular cataract extraction and phacoemulsification. Potential complications of cataract surgery and their management are also outlined.
This document discusses cataracts and presbyopia, as well as treatment options performed by Dr. Helga Fuenfhausen Pizio. A cataract is a clouding of the eye's lens that causes vision problems and is common in older adults. Symptoms include blurry or faded vision. Surgery is the only treatment and involves removing the clouded lens and replacing it with an artificial lens. For presbyopia, which causes near vision issues, multifocal lenses can provide both near and distance vision after cataract surgery without glasses. Dr. Pizio performs cataract surgery using small incisions and ultrasound and was the first in Nevada to implant a new multifocal lens.
Case presentation-congenital & developmental cataractSivarathana
This document summarizes the case presentation of a 15-year-old female student who underwent cataract surgery in her right eye 2 years ago. Her previous prescription showed mild hyperopia and astigmatism. On examination, her best corrected vision was 6/6 and her refraction showed mild residual hyperopia and astigmatism. She was diagnosed with pseudophakia and prescribed bifocal glasses. The document then provides background information on different types of cataracts, their causes, signs, symptoms, management including surgery and optical correction options.
The document discusses refractive surgery procedures for correcting vision, including LASIK, PRK, and lens implants. It describes how each procedure works to reshape the cornea and lens to reduce nearsightedness, farsightedness, and astigmatism. The risks are generally low but include infection, glare, and gradual refractive change over decades. The benefits are improved vision, though not necessarily perfect vision. Costs typically range from $1000 to $2500 per eye.
This document provides an overview of modern options for correcting presbyopia. It discusses both static and dynamic correction techniques. Static techniques include glasses, contact lenses, corneal procedures like inlays/onlays, and intraocular lenses using monovision or being multifocal. Dynamic techniques aim to restore accommodation and include accommodating intraocular lenses, lens refilling procedures, and scleral expansion techniques. The document provides details on many of these specific procedures.
This document summarizes a technique called Laser Blended Vision for treating presbyopia using a customized laser procedure. It operates through 8 mechanisms including monovision, increased depth of field, and neural processing in the brain. Clinical results show high patient satisfaction and visual outcomes for distance, intermediate, and near vision without glasses for patients with myopia, hyperopia, and emmetropia. Complications were low.
Presbyopia is an age-related condition where the eye's ability to focus on near objects progressively diminishes. It is caused by a loss of elasticity in the crystalline lens as one ages. The first signs are difficulty reading or doing close work, especially in low light, as images blur closer than 25cm from the eyes. Examination shows normal eyes and refraction reveals the need for a near vision correction, usually +1 to +2.5 added to any existing prescription for distance. Treatment involves using bifocal or two pairs of glasses, one for distance and one with a near prescription added.
Este documento discute el futuro de la cirugía de la presbicia. Actualmente existen varias opciones para tratar la presbicia, incluyendo cirugía láser en la córnea, implantes intraestromales y lentes intraoculares. En el futuro, es posible que se desarrollen nuevas tecnologías como lentes intraoculares de asfericidad variable y procedimientos láser más avanzados en la córnea para restaurar la acomodación. El éxito de estos procedimientos dependerá de criterios como la eficacia, seg
case presentation on presbyopia.age related changes in accommodation.types of presbyopia.theories of presbyopia.management options.age-related additions
Presbyopia is the age-related loss of accommodation due to reduced elasticity and flexibility of the lens. It begins in the 40s and progresses until complete loss of accommodation in the 50s-60s. Theories explain it is caused by reduced ciliary muscle contraction and increased lens diameter with age. Symptoms include difficulty with near vision, especially in low light. Treatments include reading glasses, contact lenses, and refractive surgeries like LASIK, conductive keratoplasty, and multifocal lenses. The goal is to improve near vision while maintaining good distance vision.
Ponencia presentada por el Dr. Rementería en la 6ª Jornada Catarata+ organizada por el Servicio Oftalmologico del Hospital San Rafael de Madrid.
+info: http://www.cirugiaocular.com
Presbyopia is the loss of accommodation ability that occurs with aging. It results from a loss of elasticity in the lens and ciliary muscles. By age 40-45, most people experience difficulty seeing objects close up. Symptoms include problems with near vision that are worse in low light. It is diagnosed by reduced amplitude of accommodation. Treatment involves using reading glasses, bifocals, or progressive lenses to add the needed optical power for near vision. Multifocal contact lenses and refractive surgery can also help treat presbyopia.
This document discusses the development of laser-assisted in situ keratomileusis (LASIK) ablation profiles for treating high myopia. Early profiles caused problems like increased spherical aberration and night vision disturbances when treating higher refractive errors. Researchers optimized profiles by using larger optical zones, incorporating aspheric designs, and accounting for biomechanical factors. However, high corrections still induced spherical aberration due to limits of corneal thickness. Wavefront-guided LASIK was explored as a method to treat spherical aberration induced by ablation.
This document discusses the development of new ablation profiles for treating very high myopia using LASIK. It describes how early profiles induced spherical aberration and night vision disturbances. The author developed profiles that use larger optical zones and incorporate asphericity to reduce aberrations. Challenges included controlling spherical aberration induction and limiting flap thickness. New hybrid aspheric profiles and femtosecond lasers allow treating higher levels of myopia with good accuracy and low rates of side effects like night vision disturbances.
Professor Dan Reinstein is a leading eye surgeon who specializes in laser eye surgery. He discusses how laser eye surgery can provide crystal clear vision without glasses. The quick 15 minute procedure uses a laser to reshape the cornea and provide lasting effects. He advises seeking out facts from reputable clinics and considering laser eye surgery as it can improve lives. The clinic stays ahead through dedicated research and developing innovative new technologies for laser eye treatments.
Professor Dan Reinstein is a renowned laser eye surgeon who argues that glasses and contact lenses are unnecessary and that laser eye surgery is a safe alternative that provides perfect vision. The article describes the author's own positive experience with Reinstein's laser eye surgery, which took 10 minutes per eye and required only a short recovery period. While laser eye surgery was initially controversial, it is now widely available and regulated, with risks being very small if the correct surgeon is chosen. Reinstein asserts that most people are candidates for the procedure and that the biggest barrier is simply fear.
Steve McDowell undergoes corrective laser eye surgery to improve his vision for shooting after years of frustration from impaired vision and wet shooting optics. The surgery was a success, eliminating his short-sightedness and astigmatism. Now he can see clearly without glasses or contacts, allowing him to better see targets and sights. He is pleased with the results and believes the surgery provides an advantage, though others debate if it constitutes "cheating".
This document discusses the limits and outcomes of excimer laser surgery for treating hyperopia, or farsightedness. It finds that modern third-generation lasers can achieve large optical zones and stable outcomes for correcting up to +7 diopters of hyperopia, with 79% of patients achieving 20/20 vision or better. Care must be taken to center corrections on the visual axis and monitor epithelial thickness to avoid complications. Outcomes are comparable or better than intraocular lenses, with less risk of rare but serious intraocular issues.
1) Early LASIK ablation profiles for high myopia induced spherical aberration and night vision disturbances.
2) Newer aspheric and wavefront-guided profiles aim to reduce spherical aberration induction but may still cause issues for high corrections.
3) A two-stage procedure using wavefront-guided or topography-guided enhancement can improve outcomes for high myopia LASIK.
The document provides an introduction to refractive surgery. It discusses different vision conditions like myopia, hyperopia and presbyopia. It explains how these conditions can be corrected through glasses, contact lenses or refractive surgery options like LASIK and PRK. It addresses common myths about refractive surgery, discussing the safety, effectiveness and long-term outcomes of these procedures.
This study evaluated the 6-month results of wavefront-guided custom ablation using the MEL80 CRS-Master II system in 48 eyes of 32 patients. The system uses topography and wavefront data to create an ideal postoperative corneal surface. Results found that the procedure was safe, with no eyes losing 2 lines of vision and 31% gaining 1 line. It was also effective, with 80% of eyes within ±1.00 D of the intended correction and improved uncorrected visual acuity. Higher order aberrations and spherical aberration were reduced post-operatively along with improved contrast sensitivity, especially in eyes that had below normal levels pre-operatively. The combined topography and wavefront approach helped regularize
Wavefront Treatment with the Carl Zeiss Meditec CRS-Master & MEL80 Excimer LaserLondon Vision Clinic
1. The document discusses using wavefront sensing technology with the Carl Zeiss Meditec CRS-Master and MEL80 excimer laser to improve the quality of vision following LASIK surgery.
2. A study compared treating 25 LASIK patients with an aspheric profile alone versus an aspheric profile plus wavefront higher-order aberration (HOA) corrections.
3. The results showed that adding wavefront HOA corrections to the aspheric treatment reduced induced spherical aberration and improved contrast sensitivity without compromising accuracy or safety.
Centration of Hyperopic Corneal Ablations: Corneal Vertex vs. Pupil CenterLondon Vision Clinic
This study compared centering hyperopic corneal refractive surgery ablations on the corneal vertex versus the pupil center. The study included 60 eyes divided into groups with small or large angle kappa. All ablations were centered on the corneal vertex. The study found no significant differences in accuracy, safety, or night vision between groups. However, eyes with large angle kappa had significantly worse contrast sensitivity and increased coma and spherical aberration when measured at the pupil center, but not at the corneal vertex. The conclusion was that ablations should be centered on the corneal vertex rather than the pupil center.
The document summarizes the key steps in a routine LASIK procedure. It describes preparing the patient, exposing the eye, creating a corneal flap using a microkeratome, ablating the corneal tissue with an excimer laser, repositioning the flap, and examining the eye post-operation. The author emphasizes carefully following each step, preparing both eyes, communicating with the patient, and checking for any errors or debris before the patient leaves.
The document discusses the long-term safety of LASIK based on over 50 years of lamellar corneal surgery experience. While early studies in the 2000s showed limited long-term data, newer screening techniques like epithelial thickness mapping and advances in technology have improved safety outcomes. Keratomileusis procedures from the 1970s demonstrated ectasia risks can be minimized through accurate screening and limiting resection depth and diameter.
The document summarizes research comparing the Carl Zeiss VisuMax femtosecond laser system to other laser systems for creating flaps in LASIK procedures. Key findings include:
1) The VisuMax system demonstrated high reproducibility in flap thickness, with 87.5% of flaps within 10 microns of the intended thickness and a standard deviation of only 7.89 microns.
2) Patient comfort was higher with the VisuMax system compared to other systems, as it applies minimal corneal suction and pressure for only about 20 seconds.
3) The VisuMax system can create extremely thin flaps as low as 80 microns, opening up LASIK as an option for more eyes that
The document discusses regression following LASIK surgery. It summarizes a study examining the effects of epithelial and biomechanical changes on refractive outcomes after LASIK. The study found that these changes accounted for inaccuracies in LASIK treatment. It also determined that diagnosing regression requires analysis of layered corneal changes after LASIK using techniques like ultrasound, and that directly measuring flap and stromal thickness is important for safety when considering enhancement procedures.
This document discusses evaluating the success of repairing eyes with night vision disturbances after refractive surgery. It analyzes using the area under the radial averaged wavefront spherical aberration (RAWS) plot as a single metric for success, compared to just looking at the Z4,0 coefficient within a single diameter. The study looked at 16 repair eyes and 64 control eyes. It found that while the average Z4,0 coefficient significantly improved for repair eyes, the average RAWS area did not differ significantly from controls. There was also no correlation found between RAWS area and changes in contrast sensitivity or subjective patient improvement. So the RAWS area metric requires more investigation into its usefulness.
Nano-gold for Cancer Therapy chemistry investigatory projectSIVAVINAYAKPK
chemistry investigatory project
The development of nanogold-based cancer therapy could revolutionize oncology by providing a more targeted, less invasive treatment option. This project contributes to the growing body of research aimed at harnessing nanotechnology for medical applications, paving the way for future clinical trials and potential commercial applications.
Cancer remains one of the leading causes of death worldwide, prompting the need for innovative treatment methods. Nanotechnology offers promising new approaches, including the use of gold nanoparticles (nanogold) for targeted cancer therapy. Nanogold particles possess unique physical and chemical properties that make them suitable for drug delivery, imaging, and photothermal therapy.
Travel vaccination in Manchester offers comprehensive immunization services for individuals planning international trips. Expert healthcare providers administer vaccines tailored to your destination, ensuring you stay protected against various diseases. Conveniently located clinics and flexible appointment options make it easy to get the necessary shots before your journey. Stay healthy and travel with confidence by getting vaccinated in Manchester. Visit us: www.nxhealthcare.co.uk
Histololgy of Female Reproductive System.pptxAyeshaZaid1
Dive into an in-depth exploration of the histological structure of female reproductive system with this comprehensive lecture. Presented by Dr. Ayesha Irfan, Assistant Professor of Anatomy, this presentation covers the Gross anatomy and functional histology of the female reproductive organs. Ideal for students, educators, and anyone interested in medical science, this lecture provides clear explanations, detailed diagrams, and valuable insights into female reproductive system. Enhance your knowledge and understanding of this essential aspect of human biology.
Summer is a time for fun in the sun, but the heat and humidity can also wreak havoc on your skin. From itchy rashes to unwanted pigmentation, several skin conditions become more prevalent during these warmer months.
Breast cancer: Post menopausal endocrine therapyDr. Sumit KUMAR
Breast cancer in postmenopausal women with hormone receptor-positive (HR+) status is a common and complex condition that necessitates a multifaceted approach to management. HR+ breast cancer means that the cancer cells grow in response to hormones such as estrogen and progesterone. This subtype is prevalent among postmenopausal women and typically exhibits a more indolent course compared to other forms of breast cancer, which allows for a variety of treatment options.
Diagnosis and Staging
The diagnosis of HR+ breast cancer begins with clinical evaluation, imaging, and biopsy. Imaging modalities such as mammography, ultrasound, and MRI help in assessing the extent of the disease. Histopathological examination and immunohistochemical staining of the biopsy sample confirm the diagnosis and hormone receptor status by identifying the presence of estrogen receptors (ER) and progesterone receptors (PR) on the tumor cells.
Staging involves determining the size of the tumor (T), the involvement of regional lymph nodes (N), and the presence of distant metastasis (M). The American Joint Committee on Cancer (AJCC) staging system is commonly used. Accurate staging is critical as it guides treatment decisions.
Treatment Options
Endocrine Therapy
Endocrine therapy is the cornerstone of treatment for HR+ breast cancer in postmenopausal women. The primary goal is to reduce the levels of estrogen or block its effects on cancer cells. Commonly used agents include:
Selective Estrogen Receptor Modulators (SERMs): Tamoxifen is a SERM that binds to estrogen receptors, blocking estrogen from stimulating breast cancer cells. It is effective but may have side effects such as increased risk of endometrial cancer and thromboembolic events.
Aromatase Inhibitors (AIs): These drugs, including anastrozole, letrozole, and exemestane, lower estrogen levels by inhibiting the aromatase enzyme, which converts androgens to estrogen in peripheral tissues. AIs are generally preferred in postmenopausal women due to their efficacy and safety profile compared to tamoxifen.
Selective Estrogen Receptor Downregulators (SERDs): Fulvestrant is a SERD that degrades estrogen receptors and is used in cases where resistance to other endocrine therapies develops.
Combination Therapies
Combining endocrine therapy with other treatments enhances efficacy. Examples include:
Endocrine Therapy with CDK4/6 Inhibitors: Palbociclib, ribociclib, and abemaciclib are CDK4/6 inhibitors that, when combined with endocrine therapy, significantly improve progression-free survival in advanced HR+ breast cancer.
Endocrine Therapy with mTOR Inhibitors: Everolimus, an mTOR inhibitor, can be added to endocrine therapy for patients who have developed resistance to aromatase inhibitors.
Chemotherapy
Chemotherapy is generally reserved for patients with high-risk features, such as large tumor size, high-grade histology, or extensive lymph node involvement. Regimens often include anthracyclines and taxanes.
How to Control Your Asthma Tips by gokuldas hospital.Gokuldas Hospital
Respiratory issues like asthma are the most sensitive issue that is affecting millions worldwide. It hampers the daily activities leaving the body tired and breathless.
The key to a good grip on asthma is proper knowledge and management strategies. Understanding the patient-specific symptoms and carving out an effective treatment likewise is the best way to keep asthma under control.
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Lecture 6 -- Memory 2015.pptlearning occurs when a stimulus (unconditioned st...AyushGadhvi1
learning occurs when a stimulus (unconditioned stimulus) eliciting a response (unconditioned response) • is paired with another stimulus (conditioned stimulus)
Co-Chairs, Val J. Lowe, MD, and Cyrus A. Raji, MD, PhD, prepared useful Practice Aids pertaining to Alzheimer’s disease for this CME/AAPA activity titled “Alzheimer’s Disease Case Conference: Gearing Up for the Expanding Role of Neuroradiology in Diagnosis and Treatment.” For the full presentation, downloadable Practice Aids, and complete CME/AAPA information, and to apply for credit, please visit us at https://bit.ly/3PvVY25. CME/AAPA credit will be available until June 28, 2025.
1. HEALTH Eyesight
Linda Lusardi, 51, had previously keeping people from having
been turned away by high-street laser surgery on the eyes is fear
laser surgeons as an “unsuitable” – and knowledge dispels fear.”
candidate, but 18 months ago One technique promoted by
she successfully had the Prof. Reinstein is laser blended
operation and is delighted with vision, which adjusts each eye
the results. differently for distance and near
“I was starting to need glasses vision, and which he believes
to read as well as to drive,” can significantly reduce the
she explains. “I went to see need for reading glasses or
Professor Dan Reinstein and he bifocals as the eye ages. He is
said he could help me. I found one of the few doctors so far to
the surgery a bit scary but over offer such a treatment.
very quickly. I am pleased to Laser surgery in general has
say there was no pain at all and had mixed reviews in the
the recovery was very quick. past, with reports of results that
My eyes are better now than failed to live up to patients’
when I was 16.” expectations, continuing
problems with night vision after
Seeing is believing the operation and concerns
Dan, a laser eye surgeon at the over long-term safety.
London Vision Clinic, also Recent research, however,
operated on Phillip Schofield indicates that complications
and is a pioneer of treatments occur in fewer than five per
for ageing eyes and those with cent of cases.
complicated prescriptions. He Meanwhile, many eye
says: “No one could possibly surgeons believe that for the
prefer being dependent on first time there’s a very real
glasses or contact lenses as it possibility of delivering perfect
means there is something wrong sight to those who could never
with the body. The only thing have dreamed of it before.
More and more THE LASER LOWDOWN
of us are Laser eye surgery can help correct myopia (short sightedness),
choosing laser hyperopia (long sightedness), astigmatism (distorted vision
surgery over because of a misshapen eye surface) and, in some clinics,
glasses or
contact lenses presbyopia (age-related vision). It involves reshaping the
cornea using a laser and is done as an outpatient procedure.
I can see
As the surgery is considered non-essential, it is not usually
available on the NHS. However, some NHS hospitals will offer
the treatment on a private basis.
Finding the right surgeon for your type of procedure is
crucial to success. The Royal College of Ophthalmologists
guidelines say that only registered surgeons with specialist
clearly now
training should carry out laser surgery. For the full
guidelines, visit the college website at rcophth.ac.uk. To
find a consultant with specialist experience, visit
drfoster.co.uk/Guides/ConsultantGuide.
The website lasik-eyes.co.uk includes patient reviews to
help you compare pri prices and procedures.
Many stars can’t believe their eyes after
yes To contact Professor Reinstein’s London
Profe
Vision Clinic, visit londonvisionclinic.com.
laser vision correction surgery. But can we £4
Prices start at £4,600 for surgery to both
eyes, which can b paid in instalments.
be
all look forward to a life without glasses?
P
Nicole Kidman (lef
(left)
hillip Schofield has a whole new people a year who opt to have their and Courteney Co Cox
outlook on life these days – and eyes lasered in the UK. And he’s far
. (right) are two of th
the
it’s all thanks to vision correction from the only famous face who has who’v
celebrities who’ve
surgery. After having the procedure been able to say goodbye to glasses
bye tried the surgery
(which he allowed to be filmed for with the help of an ophthalmic
PHOTOS: FAMOUS. GETTY IMAGES. SCOPE FEATURES
This Morning), the popular presenter, an,
surgeon. Nicole Kidman, Brad
a glasses wearer since the age of 15, x
Pitt and Courteney Cox are all
could not quite believe his eyes. reported to have had the op,
“Done! Unbelievable, astonishing, while Jessica Simpson and Kim
painless and quite emotional,” he said. Kardashian have, like Phillip,
“I just sent my glasses to Africa!” And allowed their procedures to be
es
two weeks later, Phillip revealed to ws.
filmed for their TV shows.
HELLO ! just how much his life had First carried out in the UK in
e
changed. For the first time since the late 1980s, laser eye surgery
childhood, he said, he could see clearly is now so effective it can treat
an
without the help of contact lenses or ems
almost all vision problems –
114 glasses and could read the autocue in including, some believe, ieve,
the This Morning studio with ease. presbyopia or sight deter-eter-
Phillip is just one of around 100,000 ioration as a result of age.
HELLO1110p114.indd 2 6/2/10 03:12:39