نتایج جستجو برای: corneal astigmatism

تعداد نتایج: 30204  

Journal: :Investigative ophthalmology & visual science 2004
Antonio Guirao Jaime Tejedor Pablo Artal

PURPOSE To study the effect of small-incision cataract surgery on the optical aberrations of the cornea. METHODS Corneal topography was measured before and after cataract surgery on 70 eyes of 70 patients. Monofocal foldable IOLs were implanted after phacoemulsification through a clear-cornea, 3.5-mm incision without suture. Corneal aberrations, up to the fifth order and 6-mm pupil, were calc...

2013
Huseyin Serdarogullari Mehmet Tetikoglu Hatice Karahan Feyza Altin Mustafa Elcioglu

PURPOSE To determine the prevalence of keratoconus (KCN) and subclinical KCN among subjects with two or more diopters (D) of astigmatism, and to compare Pentacam parameters among these subjects. METHODS One hundred and twenty eight eyes of 64 subjects with astigmatism ≥2D were included in the study. All subjects underwent a complete ophthalmic examination which included refraction, visual acu...

2014
Dae Seung Lee Mee Kum Kim Won Ryang Wee

PURPOSE To investigate the biometric risk factors for corneal surface complications associated with hydrogel soft contact lens (SCL) fitting in myopic patients in Korea. METHODS This is a retrospective case-control study. The records of 124 subjects (124 eyes) who wore SCLs on a daily basis were reviewed. Thirty-one patients (31 eyes) who were diagnosed with corneal neovascularization (NV) wh...

Journal: :acta medica iranica 0
mehdi hosseini tehrani afshin doost mohammadi afshin doost mohammadi

this work is a report 0/9 cases ofarcuate incision for correction 0/astigmatism, after penetrating keratoplasty. plannings were based ojj corneal topography, and the first operation was always arcuate incision alone. 11,e secondary plans were based on refractive errors. the mean of preoperative astigmatism was 6d with the range of5 to 9/). after arcuate incision a/the graft-host interface in th...

Journal: :Arquivos brasileiros de oftalmologia 2008
Wilson Takashi Hida Antonio Francisco Pimenta Motta Daniela Lumi Inomata Martha de Queiroz Monteiro Jales Antonio Carlos Facio Júnior Newton Kara José Júnior Celso Takashi Nakano

The use of multifocal intraocular lenses (IOLs) is a great advance in the treatment of patients with cataract allowing near and distance uncorrected visual acuity recovery. However patients with some degrees of corneal astigmatism have some limitations. We present 3 cases that were indicated for phacoemulsitfication and multifocal intraocular lens implant (AcrySof Restor, Alcon Labs) after limb...

Journal: :Journal of refractive surgery 2015
Florian T A Kretz Detlev Breyer Karsten Klabe Gerd U Auffarth Hakan Kaymak

PURPOSE To evaluate the visual, refractive, and aberrometric outcomes of a bitoric intraocular lens (IOL) and its stability and alignment within the capsular bag. METHODS A retrospective study including 41 eyes of 24 patients with preexisting corneal astigmatism of 0.75 diopters or greater undergoing cataract surgery with implantation of the bitoric IOL AT TORBI 709M (Carl Zeiss Meditec, Jena...

Journal: :European journal of ophthalmology 2008
S M Bar-Sela O Spierer A Spierer

PURPOSE To evaluate the use of 10/0 polyester (Mersilene) sutures for closure of small corneal incision after congenital cataract surgery. METHODS The authors retrospectively reviewed the medical records of 58 cases (42 patients) who underwent congenital cataract extraction and intraocular lens implantation between 1999 and 2004, using Mersilene sutures. An examination looking for suture-rela...

Journal: :International Journal of Health Sciences (IJHS) 2022

Aims: To analyse the outcome of DALK in patients with keratoconus terms best corrected and uncorrected visual acuity, average K topographic astigmatism. Settings design: Prospective interventional case series study Material methods: 28 eyes diagnosed were evaluated from August 2009 – July 2011 a tertiary eye care hospital. All underwent outcomes assessed on 4 parameters: Average Keratometric re...

Journal: :Investigative ophthalmology & visual science 2003
Joseph M Miller Velma Dobson Erin M Harvey Duane L Sherrill

PURPOSE To design and test a cost-efficient, community-based vision screening program for a population of Native American preschool children in which there is a high prevalence of astigmatism. METHODS Based on analysis of vision screening and eye examination data from a preschool population with a 33% prevalence of astigmatism, comparative costs to conduct a 1000-child screening program with ...

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