The Effect of Optical Zone Decentration on Lower- and Higher-Order Aberrations after Photorefractive Keratectomy in a Cat Model
نویسندگان
چکیده
منابع مشابه
The effect of optical zone decentration on lower- and higher-order aberrations after photorefractive keratectomy in a cat model.
PURPOSE To simulate the effects of decentration on lower- and higher-order aberrations (LOAs and HOAs) and optical quality, by using measured wavefront error (WFE) data from a cat photorefractive keratectomy (PRK) model. METHODS WFE differences were obtained from five cats' eyes 19 +/-7 weeks after spherical myopic PRK for -6 D (three eyes) and -10 D (two eyes). Ablation-centered WFEs were co...
متن کاملEffect of larger ablation zone and transition zone on corneal optical aberrations after photorefractive keratectomy.
OBJECTIVE To evaluate the effects of photorefractive keratectomy on corneal optical aberrations using a 5.5-mm optical zone and a 7.0-mm transition zone. METHODS Videokeratographs of 72 eyes from 47 patients treated for low to moderate (1-9 diopters) myopia were obtained at the preoperative and 1-, 3-, 6-, 12-, and 18-month postoperative examinations. The videokeratoscopy data files were used...
متن کاملImpact of Treatment Decentration on Higher-Order Aberrations after SMILE
Purpose. To evaluate decentration following femtosecond laser small incision lenticule extraction (SMILE) and sub-Bowman keratomileusis (SBK) and its impact on higher-order aberrations (HOAs). Methods. Prospective, nonrandom, and comparison study. There were 96 eyes of 52 patients who received SMILE and 96 eyes of 49 patients who received SBK in this study. Decentration was calculated 6 months ...
متن کاملEffect of pupillary dilation on corneal optical aberrations after photorefractive keratectomy.
BACKGROUND Complaints of glare, halos, and disturbances of night vision after photorefractive keratectomy (PRK) probably result from changes in the corneal aberration structure induced by the laser ablation procedure. The purpose of this article is to characterize changes in the corneal aberration structure after PRK and to demonstrate the effect of pupil dilation on these changes. METHODS Vi...
متن کاملOptical effects of anti-TGFbeta treatment after photorefractive keratectomy in a cat model.
PURPOSE To assess the contribution of corneal myofibroblasts to optical changes induced by photorefractive keratectomy (PRK) in a cat model. METHODS The transforming growth factor (TGF)-beta-dependence of feline corneal keratocyte differentiation into alpha-smooth muscle actin (alphaSMA)-positive myofibroblasts was first tested in vitro. Twenty-nine eyes of 16 cats were then treated with -10 ...
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ژورنال
عنوان ژورنال: Investigative Opthalmology & Visual Science
سال: 2007
ISSN: 1552-5783
DOI: 10.1167/iovs.07-0661