Results 131 to 140 of about 61,280 (177)
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Optometry and Vision Science, 1989
Measurement of refraction in the principal meridians and off-axis meridians in both directions from the visual axis was undertaken. The extent of disagreement between the sine-squared law and the actual astigmatism of living astigmatic eyes was calculated. The corrected visual acuity correlates with the residual ametropia.
N M, Sergienko, G D, Aliev
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Measurement of refraction in the principal meridians and off-axis meridians in both directions from the visual axis was undertaken. The extent of disagreement between the sine-squared law and the actual astigmatism of living astigmatic eyes was calculated. The corrected visual acuity correlates with the residual ametropia.
N M, Sergienko, G D, Aliev
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Ophthalmic and Physiological Optics, 2000
SummaryThe quantitative representation and analysis of astigmatism present difficulties for the researcher. The case is made that the difficulties arise because of the way astigmatism is conceived and defined. In most cases astigmatism is regarded as cylinder.
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SummaryThe quantitative representation and analysis of astigmatism present difficulties for the researcher. The case is made that the difficulties arise because of the way astigmatism is conceived and defined. In most cases astigmatism is regarded as cylinder.
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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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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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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