نتایج جستجو برای: best corrected visual acuity
تعداد نتایج: 764921 فیلتر نتایج به سال:
OBJECTIVE To report the results of penetrating keratoplasty performed by residents. METHOD A retrospective medical record review of all patients undergoing penetrating keratoplasty performed by residents at our institution from April 1998 to April 2002. RESULTS Forty penetrating keratoplasty procedures were performed by 8 residents. The most common indication was keratoconus (17 eyes [43%])...
Results: Th e mean age of the patients was 56.3 years (range: 22-73). Overall, the mean preoperative best-corrected visual acuity was 20/800, and the fi nal mean postoperative best-corrected visual acuity at the 12-month visit was 20/160. Th e overall rate of eyes having an increased best-corrected visual acuity was 75.4% at month 12. Subconjunctival haemorrhage was observed in 7 eyes (13.2%), ...
PURPOSE Wavefront optical aberrations induced by refractive corneal surgery correction of myopia are probably the reason for deterioration of visual performance in some eyes after surgery. Customized photoablation of the cornea to correct both the sphero-cylindrical refractive error as well as individual optical aberrations may improve postoperative visual acuity and visual performance. METHO...
purpose: to evaluate visual outcomes after deep anterior lamellar keratoplasty (dalk) in patients with keratoconus. methods: in this interventional case series, patients with moderate to advanced keratoconus underwent dalk. inclusion criteria consisted of contact lens intolerance or poor spectacle-corrected visual acuity. dalk was performed using the big-bubble technique introduced by anwar and...
AIM To determine the relative risk of a poor visual outcome following posterior capsule rupture during cataract surgery. METHODS Prospective data were collected on consecutive eyes undergoing cataract extraction. The patient's age, preoperative visual acuity, ocular comorbidity, grade of surgeon, and operative complications were documented. The best spectacle corrected visual acuity was recor...
PURPOSE To evaluate how small amounts of astigmatism affect visual acuity and the minimum astigmatism values that should be corrected to achieve maximum visual performance. SETTING Optics Laboratory, University of Murcia, Murcia, Spain. DESIGN Case series. METHODS A wavefront sensor was used to measure astigmatism and higher-order aberrations (HOAs) in normal young eyes with astigmatism r...
purpose: to compare the results of three-piece and one- piece hydrophobic acrylic posterior chamber intraocular lens (iol) with poly methyl metacrylate (pmma) iol implanted during lensectomy, posterior capsulotomy and anterior vitrectomy for congenital or developmental cataract. methods: this is a historical cohort study conducted on patients with congenital or developmental cataract who underw...
OBJECTIVE To compare the effectiveness of eyeglass treatment of astigmatism-related amblyopia in children younger than 8 years (range, 4.75-7.99 years) versus children 8 years of age and older (range, 8.00-13.53 years) over short (6-week) and long (1-year) treatment intervals. DESIGN Prospective, interventional, comparative case-control study. PARTICIPANTS Four hundred forty-six nonastigmat...
The aim of this study was to calculate the level of improvement of visual acuity comparing the best corrected visual acuity (VA) achieved with spectacles with the best corrected VA achieved with rigid gas permeable (RGP) contact lenses in patients with high, simple or compound corneal astigmatism (myopic, hypermetropic and mixed). The investigation of patients included auto-kerato-refractometry...
BACKGROUND Patients with angioid streaks are prone to developing subretinal hemorrhage after ocular or head injury due to the brittleness of Bruch's membrane. However, there have been no reports of any angioid streak patients in whom choroidal neovascularization occurred after vitrectomy surgery. We report herein a patient with angioid streaks who developed choroidal neovascularization after vi...
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