A Comparative Study of Refractive Errors with Age Related Cataract
... Hyperopia and cataract: Our results indicate that hyperopia was significantly lower in subjects with cataract. This is due to the increase in nuclear sclerosis leading to myopic shift, in the majority of older subjects with cataract. Also, no significant correlation was observed between hyperopia an ...
... Hyperopia and cataract: Our results indicate that hyperopia was significantly lower in subjects with cataract. This is due to the increase in nuclear sclerosis leading to myopic shift, in the majority of older subjects with cataract. Also, no significant correlation was observed between hyperopia an ...
Unwrapping Hartman-Shack Images from Highly Aberrated Eyes
... To extend the dynamic range of HartmanShack wavefront sensor using B-spline based extrapolation • The results: The dynamic range of a typical HS sensor increases 3.5 to 13 times compared with a simple unwrapping algorithm ...
... To extend the dynamic range of HartmanShack wavefront sensor using B-spline based extrapolation • The results: The dynamic range of a typical HS sensor increases 3.5 to 13 times compared with a simple unwrapping algorithm ...
Small incision lenticule extraction (SMILE) versus laser in
... procedure. Moreover, this trial may show that SMILE has additional benefits, such as reduction in higherorder aberrations that leads to better quality of vision. On the other hand if we use a superiority trial design with a small sample size that fails to demonstrate any difference between LASIK and ...
... procedure. Moreover, this trial may show that SMILE has additional benefits, such as reduction in higherorder aberrations that leads to better quality of vision. On the other hand if we use a superiority trial design with a small sample size that fails to demonstrate any difference between LASIK and ...
PDF
... from the limbus. Common causes are perforating injury, scleritis and absolute glaucoma. Equatorial staphloma is due to the bulge of ...
... from the limbus. Common causes are perforating injury, scleritis and absolute glaucoma. Equatorial staphloma is due to the bulge of ...
Reporting Acuity Outcomes and Refractive Accuracy After LASIK
... which is well illustrated in the epithelial remodeling and also documented in cataract3 and corneal transplant cases4 and investigated with anterior segment optical coherence tomography, which may significantly bias the refractive and visual function results. Nevertheless, we believe that the novelt ...
... which is well illustrated in the epithelial remodeling and also documented in cataract3 and corneal transplant cases4 and investigated with anterior segment optical coherence tomography, which may significantly bias the refractive and visual function results. Nevertheless, we believe that the novelt ...
strategy - University of Houston College of Optometry
... animals provide a rationale for potential optical treatment strategies. First, animal studies have demonstrated that refractive development and axial growth are regulated by visual feedback associated with the eye’s effective refractive status, in essence optical defocus. In particular, lens compens ...
... animals provide a rationale for potential optical treatment strategies. First, animal studies have demonstrated that refractive development and axial growth are regulated by visual feedback associated with the eye’s effective refractive status, in essence optical defocus. In particular, lens compens ...
Conjunctivitis
... the retina in the back of the eye. The macula is the bull'seye center of the retina. Though the macula makes up only a small part of the retina, it is one hundred times more sensitive to detail than the peripheral retina and allows us to see tiny detail, to read fine print, recognize faces, thread a ...
... the retina in the back of the eye. The macula is the bull'seye center of the retina. Though the macula makes up only a small part of the retina, it is one hundred times more sensitive to detail than the peripheral retina and allows us to see tiny detail, to read fine print, recognize faces, thread a ...
Screening Preschool Children for Visual Disorders: A Pilot Study
... Purpose: Ocular and/or vision defects are one of the most common reasons for the referral of young children to the hospital. Vision disorders are the fourth most common disability of children and the leading cause of handicapping conditions in childhood. In preschool-age children, amblyopia and ambl ...
... Purpose: Ocular and/or vision defects are one of the most common reasons for the referral of young children to the hospital. Vision disorders are the fourth most common disability of children and the leading cause of handicapping conditions in childhood. In preschool-age children, amblyopia and ambl ...
Refractive surgery and the ADF
... safety of those in their charge in action or exercise when spectacles are fogged, wet, damaged, lost or removed to wear headgear? A myopic infantryman is probably as dependent upon his glasses as he is on his rifle. Reports are heard of infantry in Operation Desert Storm who removed their glasses in ...
... safety of those in their charge in action or exercise when spectacles are fogged, wet, damaged, lost or removed to wear headgear? A myopic infantryman is probably as dependent upon his glasses as he is on his rifle. Reports are heard of infantry in Operation Desert Storm who removed their glasses in ...
Bilateral Aphakic Epikeratophakia-Induced Irregular Astigmatism
... A 49 year old white female, referred by her glaucoma specialist for a cornea and contact lens evaluation, presented to our OSU clinic with a chief complaint of blurred vision with her current glasses. She was born with congenital cataracts and underwent bilateral cataract surgery as a child and as a ...
... A 49 year old white female, referred by her glaucoma specialist for a cornea and contact lens evaluation, presented to our OSU clinic with a chief complaint of blurred vision with her current glasses. She was born with congenital cataracts and underwent bilateral cataract surgery as a child and as a ...
OCULAR SURGERY NEWS 5/1/03
... Fifty eyes of patients with direct axes compound myopic astigmatism were examined using an electronic analyzer of the tension of tissues based on the speed of sound traveling through them. “Our acoustic analyzer consists of a generator and two acoustic wave receivers. The distance between the genera ...
... Fifty eyes of patients with direct axes compound myopic astigmatism were examined using an electronic analyzer of the tension of tissues based on the speed of sound traveling through them. “Our acoustic analyzer consists of a generator and two acoustic wave receivers. The distance between the genera ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... case report of Weill Marchesani syndrome in a 14yr old female who was being treated as a case of high myopia for about 5 years and the underlying syndrome was detected only after glaucoma had set in. Keywords: brachydactyly, ectopia lentis, glaucoma, Weill Marchesani ...
... case report of Weill Marchesani syndrome in a 14yr old female who was being treated as a case of high myopia for about 5 years and the underlying syndrome was detected only after glaucoma had set in. Keywords: brachydactyly, ectopia lentis, glaucoma, Weill Marchesani ...
Pre-OPerative Laser surgery InformatIon
... To achieve a desired result, it is sometimes necessary to perform additional ‘touch‑up’ or enhancement laser procedures. This is necessary more often for combined treatments involving astigmatism and for larger refractive errors. An enhancement is a means of optimising vision. It is usually done 3 m ...
... To achieve a desired result, it is sometimes necessary to perform additional ‘touch‑up’ or enhancement laser procedures. This is necessary more often for combined treatments involving astigmatism and for larger refractive errors. An enhancement is a means of optimising vision. It is usually done 3 m ...
Now
... The STAAR Collamer ICL and the TORIC ICL are posterior chamber phakic intraocular lenses. Made of Collamer, STAAR’s proprietary collagen ...
... The STAAR Collamer ICL and the TORIC ICL are posterior chamber phakic intraocular lenses. Made of Collamer, STAAR’s proprietary collagen ...
laser refractive institute
... Vision improves rapidly-usually 1-3 days. Because of rapid vision recovery, both eyes can be performed the same day. Low risk of infection. Risk of haze or scarring is very low. There is minimal or no discomfort with the procedure. There is only minimal discomfort following the surgery. Very few eye ...
... Vision improves rapidly-usually 1-3 days. Because of rapid vision recovery, both eyes can be performed the same day. Low risk of infection. Risk of haze or scarring is very low. There is minimal or no discomfort with the procedure. There is only minimal discomfort following the surgery. Very few eye ...
Patient Brochure - EVO+ Visian ICL
... D and the correction of hyperopia in adults with hyperopia ranging from +0.5 D to +10.0 D with or without astigmatism up to 6.0 D. It is indicated for patients who are 21 to 45 years of age. In order to be sure that your surgeon will use a EVO Visian ICL with the most adequate power for your eye, yo ...
... D and the correction of hyperopia in adults with hyperopia ranging from +0.5 D to +10.0 D with or without astigmatism up to 6.0 D. It is indicated for patients who are 21 to 45 years of age. In order to be sure that your surgeon will use a EVO Visian ICL with the most adequate power for your eye, yo ...
Topography-guided LASIK
... by the corneal opacities. In contrast, topography-guided treatment can be used successfully to evaluate highly aberrated eyes. Aberrometer measurements are also affected by the state of accommodation (which can induce highorder aberrations in addition to spherical refractive changes), early cataract ...
... by the corneal opacities. In contrast, topography-guided treatment can be used successfully to evaluate highly aberrated eyes. Aberrometer measurements are also affected by the state of accommodation (which can induce highorder aberrations in addition to spherical refractive changes), early cataract ...
Intacts - Long Island Vision Experts
... The following information is intended to help you make an informed decision about having Intacs surgery to correct your vision. It is impossible to list all of the possible risks and complications associated with this proposed surgery or any other treatment. Risks and complications that are consider ...
... The following information is intended to help you make an informed decision about having Intacs surgery to correct your vision. It is impossible to list all of the possible risks and complications associated with this proposed surgery or any other treatment. Risks and complications that are consider ...
Accessory Structures of the Eye Lacrimal apparatus
... Provides nutrients for the lens and cornea Reabsorbed into venous blood Blocked drainage = Glaucoma ...
... Provides nutrients for the lens and cornea Reabsorbed into venous blood Blocked drainage = Glaucoma ...
Poster Session
... lenses on right eye. Biometric and refractive measurements were then performed every 2 weeks. The illuminative parameters of all groups were identical and the light quantum number was 3×10-4μmolcm-2s-1. Results: After the beginning of the experiment, the right eyes of the two groups decreased in ref ...
... lenses on right eye. Biometric and refractive measurements were then performed every 2 weeks. The illuminative parameters of all groups were identical and the light quantum number was 3×10-4μmolcm-2s-1. Results: After the beginning of the experiment, the right eyes of the two groups decreased in ref ...
Optics of the Human Eye
... Do not yet have an accurate measure of refractive index distribution Most cells are long fibres which have lost their nuclei Lens grows continuously with age, with new fibres laid over the older fibres Anterior radius of curvature is about 12 mm The posterior radius of curvature is about -6mm (note ...
... Do not yet have an accurate measure of refractive index distribution Most cells are long fibres which have lost their nuclei Lens grows continuously with age, with new fibres laid over the older fibres Anterior radius of curvature is about 12 mm The posterior radius of curvature is about -6mm (note ...
Visual performance in emmetropia and low myopia after
... due to the fact that uncorrected young myopes will only experience clear vision of fine details when objects are very near to them (Fiorentini & Maffei, 1976). Even the best corrected adult myope may typically experience more chronic blur. This could be a result of their not constantly wearing their ...
... due to the fact that uncorrected young myopes will only experience clear vision of fine details when objects are very near to them (Fiorentini & Maffei, 1976). Even the best corrected adult myope may typically experience more chronic blur. This could be a result of their not constantly wearing their ...
FUTURE PERSPECTIVES IN SMILE, LASIK AND PRK, AND
... ablative techniques including PRK and LASIK have been shown to be safe, effective, and accurate for the correction of myopia, hyperopia, and astigmatism within certain limits. As versatile as the excimer laser is, however, not every refractive error can be corrected on the cornea—particularly very h ...
... ablative techniques including PRK and LASIK have been shown to be safe, effective, and accurate for the correction of myopia, hyperopia, and astigmatism within certain limits. As versatile as the excimer laser is, however, not every refractive error can be corrected on the cornea—particularly very h ...
Phakic IOLs: Who Is Not a Candidate?
... of a phakic IOL. Although the rate of cataract formation requiring surgery in the ICL’s FDA trial was low (0.6%), the implantation of a phakic IOL could hasten the formation of a cataract. Luckily, the presence of an ICL does not make cataract surgery more difficult, because the lens comes out easil ...
... of a phakic IOL. Although the rate of cataract formation requiring surgery in the ICL’s FDA trial was low (0.6%), the implantation of a phakic IOL could hasten the formation of a cataract. Luckily, the presence of an ICL does not make cataract surgery more difficult, because the lens comes out easil ...
LASIK To Improve Visual Acuity in Adult Neglected Refractive
... cases when the suppressed eye was done first a temporary postoperative diplopia was observed until the dominant eye was treated. The improvement in BCVA in the patients may have a different explanation: First the correction of ametropia after the surgery, second the improvement of the corneal refrac ...
... cases when the suppressed eye was done first a temporary postoperative diplopia was observed until the dominant eye was treated. The improvement in BCVA in the patients may have a different explanation: First the correction of ametropia after the surgery, second the improvement of the corneal refrac ...