Results 201 to 210 of about 38,555 (245)
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Optometry and Vision Science, 1978
ABSTRACT A large amount of evidence suggests that astigmatism is hereditary. Other evidence indicates that the prevalence of astigmatism varies widely between and within racial groups and that both the direction and the amount of astigmatism tend to vary as a function of age and in response to environmental influences.
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ABSTRACT A large amount of evidence suggests that astigmatism is hereditary. Other evidence indicates that the prevalence of astigmatism varies widely between and within racial groups and that both the direction and the amount of astigmatism tend to vary as a function of age and in response to environmental influences.
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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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A Longitudinal Study of Corneal Astigmatism and Total Astigmatism
Optometry and Vision Science, 1981Abstract Cross‐sectional studies indicate that mean total astigmatism changes with age; varying from as much as 0.62 D with‐the‐rule during youth to as much as 0.37 D against‐the‐rule in samples of elderly patients. The present study involves the examination of adult patients who were seen regularly for a period of at least 40 years ...
W R, Baldwin, D, Mills
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Current Opinion in Ophthalmology, 2002
Although laser in situ keratomileusis (LASIK) enjoys a high success rate, postoperative residual or induced astigmatism may limit uncorrected visual acuity and cause starbursts and glare at night. Irregular astigmatism can also cause loss of best-corrected visual acuity, monocular diplopia, and ghosting of images.
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Although laser in situ keratomileusis (LASIK) enjoys a high success rate, postoperative residual or induced astigmatism may limit uncorrected visual acuity and cause starbursts and glare at night. Irregular astigmatism can also cause loss of best-corrected visual acuity, monocular diplopia, and ghosting of images.
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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.
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The “V” Test for Astigmatism, and Astigmatic Charts in General
American Journal of Ophthalmology, 1923Abstract This is an historical and critical note on the V test and some others related to it.
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[The analysis of the axises of corneal astigmatism and total astigmatism in astigmatic patients].
Yan ke xue bao = Eye science, 2004The axial amount and the relationship between the axises of corneal astigmatism and total astigmatism were statistically analyzed in ametropic patients, for the purpose of selecting the refractive correction, the base curve of contact lens, the axis of astigmatic contact lens, and providing the reference of operational amount of ecimer laser ...
Z, Dai, R, Yu, X, Gong, S, Wang
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Internal astigmatism and ocular residual astigmatism
Journal of Cataract and Refractive Surgery, 2012openaire +2 more sources