نتایج جستجو برای: keratometry

تعداد نتایج: 709  

2017
Ji-guo Yu Jie Zhong Zhong-ming Mei Fang Zhao Na Tao Yi Xiang

BACKGROUND To evaluate the distribution of biometric parameters and corneal astigmatism using the IOLMaster device before phacoemulsification in cataract patients in Central China. METHODS Consecutive cataract patients were recruited at the Central Hospital of Wuhan between January 2015 and June 2016. Ocular axial length (AL), keratometry values, anterior chamber depth (ACD) and horizontal co...

Journal: :The British journal of ophthalmology 2011
David P S O'Brart Elsie Chan Konstantinos Samaras Parul Patel Shaheen P Shah

AIMS A blind, randomised, prospective, bilateral study to investigate the efficacy of riboflavin/ultraviolet A corneal collagen cross-linkage to halt the progression of keratoconus. METHODS 24 patients with early/moderate bilateral keratoconus with recent progression were recruited. One eye was randomly assigned to undergo collagen cross-linkage following epithelial removal with riboflavin 0....

Journal: :Nepalese journal of ophthalmology : a biannual peer-reviewed academic journal of the Nepal Ophthalmic Society : NEPJOPH 2014
Pawan Baral Nabin Baral Indra Man Maharjan Bhoj Raj Gautam Madhavendra Bhandari

INTRODUCTION The biometric parameters of the eye are measured for the calculation of the intra ocular lens power to be used in cataract surgery. OBJECTIVE To report the keratometry reading, axial length and intra ocular lens power used for eyes operated for cataract in Karnali Zone, Nepal, and to compare these findings with those reported in other similar studies. SUBJECTS AND METHODS The d...

2012
Steven M Christiansen Marcus C Neuffer Shameema Sikder Rodmehr T Semnani Majid Moshirfar

PURPOSE To evaluate visual outcomes in moderately myopic eyes with flat and steep corneas (preoperatively) that have been treated with laser-assisted in situ keratomileusis (LASIK). PATIENTS AND METHODS Records of ninety-six eyes with average preoperative keratometry (K) values between 39.9 and 42.0 diopters (D) (flat) were matched with 103 eyes with preoperative K values between 46.0 and 47....

2017
Wenwei Li Bin Wang

BACKGROUND The aim of this study was to evaluate the efficacy and safety of transepithelial corneal collagen crosslinking (transepithelial CXL) versus standard corneal collagen crosslinking (epithelium-off CXL) on keratoconus. METHODS Eligible studies were identified by systematically searching PubMed, the Cochrane Library and Embase. Topographic parameters, corrected distant visual acuity (C...

Journal: :Ophthalmology 2017
Peter S Hersh R Doyle Stulting David Muller Daniel S Durrie Rajesh K Rajpal

PURPOSE To evaluate the safety and efficacy of corneal collagen crosslinking (CXL) for the treatment of progressive keratoconus. DESIGN Prospective, randomized, multicenter, controlled clinical trial. PARTICIPANTS Patients with progressive keratoconus (n = 205). METHODS The treatment group underwent standard CXL and the sham control group received riboflavin alone without removal of the e...

Journal: :Investigative ophthalmology & visual science 2002
Gilles Sultan Christophe Baudouin Olivier Auzerie Magdalena De Saint Jean Marie Goldschild Pierre-Jean Pisella

PURPOSE To investigate corneal thickness, curvature, and morphology with the Orbscan Topography System I (Bausch & Lomb, Inc., Salt Lake City, UT) in patients with Marfan syndrome (MFS) and to study MFS with in vivo confocal microscopy. METHODS This prospective, clinical, comparative case series included 60 eyes of 31 patients with MFS and 32 eyes of 17 control subjects. First, biomicroscopic...

Journal: :The professional medical journal 2022

Objectives: To find out the prevalence and severity of keratoconus in spring catarrh patients. Study Design: Descriptive Perspective study. Setting: OPD K.D.A Teaching Hospital Kohat. Period: March 2017 to October 2019. Material & Methods: All patients suffering from were included study after consent. Proper proforma was designed for record. Detail history taken diagnosis all properly exami...

Journal: :The British journal of ophthalmology 2010
Marije L Sminia Jan T H N de Faber Denise J Doelwijt René J Wubbels Martha Tjon-Fo-Sang

AIM To compare the axial eye length growth of the two fellow eyes within one patient after unilateral paediatric cataract surgery and to assess changes in refraction and keratometry. PATIENTS/METHODS A retrospective study in 90 eyes of 45 patients was performed. The 45 patients were divided into group 1 (patients younger than 18 months at the time of surgery, n=25) and group 2 (patients 18 mont...

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