Results 271 to 280 of about 93,210 (330)
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Age-Related Changes in Astigmatism and Potential Causes.
Cornea, 2020Astigmatism causes deterioration of the retinal image and affects vision quality. Maintenance and improvement of visual function requires an understanding of the prevalence, age-related changes, and mechanisms of astigmatism.
Hiroyuki Namba +7 more
semanticscholar +1 more source
Astigmatic keratotomy for post-keratoplasty astigmatism
Journal of Cataract and Refractive Surgery, 2006To assess astigmatic keratotomy as a means of managing post-keratoplasty astigmatism in the era of excimer laser refractive surgery.Moorfields Eye Hospital, London, England.Fifty paired arcuate keratotomies were performed with refractive and topographic guidance.
Tom R G, Poole, Linda A, Ficker
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Four-year outcomes of small incision lenticule extraction (SMILE) to correct high myopic astigmatism
British Journal of Ophthalmology, 2020Aims To evaluate the long-term outcomes of small incision lenticule extraction (SMILE) in subjects with myopic astigmatism of ≥2.00 dioptres (D). Methods Patients who underwent SMILE 4 years prior with astigmatism ≥2.00 D and ≤1.00 D were assigned to the
Yuanyuan Zhong +4 more
semanticscholar +1 more source
Femtosecond laser astigmatic keratotomy for postkeratoplasty astigmatism
Canadian Journal of Ophthalmology, 2008Two eyes of 2 patients with high astigmatism following penetrating keratoplasty were treated with femtosecond laser-assisted paired arcuate keratotomies in the donor cornea. Outcome measures included best-corrected visual acuity, refraction, keratometry, and topographic findings.
Mona, Harissi-Dagher, Dimitri T, Azar
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Journal of refractive surgery, 2020
PURPOSE To characterize the preoperative vectorial difference between manifest refractive astigmatism and anterior corneal astigmatism, termed ocular residual astigmatism (ORA), and to investigate its influence on topography-guided laser in situ ...
Avi Wallerstein +3 more
semanticscholar +1 more source
PURPOSE To characterize the preoperative vectorial difference between manifest refractive astigmatism and anterior corneal astigmatism, termed ocular residual astigmatism (ORA), and to investigate its influence on topography-guided laser in situ ...
Avi Wallerstein +3 more
semanticscholar +1 more source
Irregular Astigmatism After Radial and Astigmatic Keratotomy
American Journal of Ophthalmology, 1989Eleven eyes of six patients, who had been referred for management of irregular astigmatism after receiving crossed incisions for myopic astigmatism, had moderate to marked irregular corneal astigmatism with marked flattening in the meridians of intersecting incisions. All six patients had a decrease in best-corrected visual acuity with spectacles after
P J, McDonnell, P J, Caroline, J, Salz
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IntraLase-Enabled Astigmatic Keratotomy for Postkeratoplasty Astigmatism
American Journal of Ophthalmology, 2008To report on the outcomes of IntraLase-enabled astigmatic keratotomy (IEAK) and to compare it with manual astigmatic keratotomy (AK) for the management of postkeratoplasty astigmatism.Retrospective, comparative case series.Forty eyes of 39 patients treated at a cornea clinic at the Toronto Western Hospital were included. Twenty eyes underwent manual AK
Irit, Bahar +4 more
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Survey of Ophthalmology, 1987
With the numerous significant advances in surgical methodology--e.g., microinstrumentation, the operating microscope, the surgical keratometer, and intraocular lenses--that have been developed over the past two decades, both surgeons and patients have become increasingly aware of the final optic result of any surgical intervention.
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With the numerous significant advances in surgical methodology--e.g., microinstrumentation, the operating microscope, the surgical keratometer, and intraocular lenses--that have been developed over the past two decades, both surgeons and patients have become increasingly aware of the final optic result of any surgical intervention.
openaire +2 more sources
How much astigmatism to treat in cataract surgery.
Current Opinion in Ophthalmology, 2019PURPOSE OF REVIEW Astigmatism correction in cataract surgery is a common surgical challenge. Although there are numerous approaches to its treatment during cataract surgery, there remains a lack of consensus on what level of postoperative astigmatism to ...
Rohini R. Sigireddi, Mitchell P. Weikert
semanticscholar +1 more source
The impact of uncorrected astigmatism on night driving performance
Ophthalmic & physiological optics, 2019To investigate the effect of uncorrected astigmatism on night driving performance on a closed‐road circuit.
A. Black +3 more
semanticscholar +1 more source