Results 231 to 240 of about 276,917 (287)
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Investigation of posterior corneal curvature in CL-induced corneal swelling
Contact Lens and Anterior Eye, 2009To evaluate Orbscan II measurements without contact lens (CL) removal to monitor in vivo posterior corneal curvature in CL (hypoxia)-induced corneal swelling during extended wear (EW).Orbscan II corneal topographer was used to measure posterior corneal curvature 1 week before CL wearing and during 1 week of EW.
Raul Martin Herranz
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Corneal curvature and central corneal thickness in eyes with pseudoexfoliation syndrome
Canadian Journal of Ophthalmology, 2007Previous studies have reported different central corneal thickness (CCT) values in eyes with pseudoexfoliation syndrome (PXS). There has been no report about corneal curvature (CC) in PXS eyes. The aim of this study was to investigate the CCT together with the CC in PXS eyes with and without glaucoma.The CC (simulated keratometry 1 [SimK1], SimK2, and ...
Ramazan Yağcı
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Postnatal Changes in Corneal Curvature
American journal of optometry and physiological optic, 1976ABSTRACT Corneal curvature was measured in 10 kittens from three litters and found to change significantly during postnatal development. From our data analysis, corneal curvature can be predicted from an animal's age and weight. To facilitate this prediction for use in fitting contact lenses as occluders or diffusers in developmental ...
D, Smolen, R, Ball, J L, Zacks
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POSITION AND CURVATURE OF THE CORNEAL APEX
Optometry and Vision Science, 1969ABSTRACT Methods to measure the position of the corneal apex are reviewed and evaluated. The recommended method is with a small‐mire keratometer that has a target mounted independently of the drum.
R B, Mandell, R, St Helen
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Changes in corneal curvature in accommodation
Journal of Cataract and Refractive Surgery, 2003To determine the changes in corneal curvature in accommodation.Department of Ophthalmology, St. Luke's International Hospital, Tokyo, Japan.Twenty-eight eyes of 14 healthy volunteers with a mean age of 38.9 years (range 28 to 65 years) were enrolled in this prospective study. Corneal topographies were taken before and during accommodation.
Akihiro, Yasuda +2 more
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Effect of thermokeratoplasty on corneal curvature
Journal of Cataract and Refractive Surgery, 1990A cadaver eye model was used to evaluate and quantify the use of thermokeratoplasty for steepening the central cornea to correct hyperopia. Four groups of eye-bank eyes were treated with four separate surgical plans. Each plan involved the placement of controlled thermal burns (in the depths of the corneal stroma, using a cautery probe) applied in a ...
A C, Neumann +5 more
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Compression of corneal maps of curvature
Applied Mathematics and Computation, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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The effect of corneal thickness and corneal curvature on pneumatonometer measurements
Current Eye Research, 2002The purpose of this study was to investigate the influence of corneal topography and thickness on intraocular pressure (IOP) and pulse amplitude (PA) as measured using the Ocular Blood Flow Analyzer (OBFA) pneumatonometer (Paradigm Medical Industries, Utah, USA).47 university students volunteered for this cross-sectional study: mean age 20.4 yrs, range
Andrew J, Morgan +3 more
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DIURNAL CONSTANCY OF CORNEAL CURVATURE
American journal of optometry and archives of American Academy of Optometry, 1972ABSTRACT The corneal curvature of four subjects was measured at 7 a.m., 11 a.m., 3 p.m., and 11 p.m. for three consecutive days. No pattern of diurnal variations was found, in sharp distinction to the changes occurring with contact lens wearers.
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Contact Lenses and Corneal Curvature Changes
American Journal of Ophthalmology, 1965Changes in the physical contour of the cornea with contact-lens wear have been recognized by several authors. " These changes can be divided into two major groups: (1) molding, defined as a passive change in the physical contour of the cornea associated with contact lens wear and (2) corneal edema manifested clinically by a corneal haze seen best by ...
J A, Pratt-Johnson, D M, Warner
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