نتایج جستجو برای: refractive error

تعداد نتایج: 271299  

Journal: :Investigative ophthalmology & visual science 2003
Mary Cregg J Margaret Woodhouse Ruth E Stewart Valerie H Pakeman Nathan R Bromham Helen L Gunter Lidia Trojanowska Margaret Parker William I Fraser

PURPOSE To investigate the development of refractive errors and strabismus in a cohort of children with Down syndrome. METHOD Data for 55 children with Down syndrome who are participating in this longitudinal study of visual development, first examined by us when aged less than 2 years and on at least two other occasions, were analyzed. Mohindra retinoscopy was used to measure refractive erro...

Journal: :Vision Research 1995
X. Dezard

Purpose. The purpose of this study ws~s to evaluate We changes of the refractive error in the follow up after penetrating keratoplasty for Fuchs’ dystrophy. Methods. Between 1960 and 1991 16.2 keratoplasties with mechanical trephination and single running suture ware performed for Fuchs’ dystrophy consecutively. The suture was removed 20,4 f 7.5 months postoperatively. In 99 eyes a simultaneous...

2012
Ibeinmo Opubiri Chinyere Nnenne Pedro-Egbe

BACKGROUND Vision screening study in primary school children has not been done in Bayelsa State, South-South Nigeria. This study was therefore conducted to screen primary school children for refractive error in Bayelsa State and use the data to plan for an effective school Eye Health Program. METHODS A cross sectional study on screening for refractive error in school children was carried out ...

Journal: :Investigative ophthalmology & visual science 2005
Robert Wojciechowski Nathan Congdon Heidi Bowie Beatriz Munoz Donna Gilbert Sheila K West

PURPOSE To determine the heritability of refractive error and the familial aggregation of myopia in an older population. METHODS Seven hundred fifty-nine siblings (mean age, 73.4 years) in 241 families were recruited from the Salisbury Eye Evaluation (SEE) Study in eastern Maryland. Refractive error was determined by noncycloplegic subjective refraction (if presenting distance visual acuity w...

2014
Kanlaya Teerawattananon Chaw-Yin Myint Kwanjai Wongkittirux Yot Teerawattananon Bunyong Chinkulkitnivat Surapong Orprayoon Suwat Kusakul Supaporn Tengtrisorn Watanee Jenchitr

INTRODUCTION As part of the development of a system for the screening of refractive error in Thai children, this study describes the accuracy and feasibility of establishing a program conducted by teachers. OBJECTIVE To assess the accuracy and feasibility of screening by teachers. METHODS A cross-sectional descriptive and analytical study was conducted in 17 schools in four provinces repres...

Journal: :Nepalese journal of ophthalmology : a biannual peer-reviewed academic journal of the Nepal Ophthalmic Society : NEPJOPH 2013
K Sapkota A Pirouzian N S Matta

INTRODUCTION Refractive error is a common cause of amblyopia. OBJECTIVE To determine prevalence of amblyopia and the pattern and the types of refractive error in children with amblyopia in a tertiary eye hospital of Nepal. MATERIALS AND METHODS A retrospective chart review of children diagnosed with amblyopia in the Nepal Eye Hospital (NEH) from July 2006 to June 2011 was conducted. Childre...

2014
Fabio H Ferraz José E Corrente Paula Opromolla Silvana A Schellini

BACKGROUND The World Health Organization (WHO) definitions of blindness and visual impairment are widely based on best-corrected visual acuity excluding uncorrected refractive errors (URE) as a visual impairment cause. Recently, URE was included as a cause of visual impairment, thus emphasizing the burden of visual impairment due to refractive error (RE) worldwide is substantially higher. The p...

Journal: :بینا 0
عباس باقری a bagheri ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم شراره صفاپور sh safapoor ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم احمدعلی فردوسی aa ferdosi ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- خیابان پایدارفرد (خیابان امیر ابراهیمی)- پلاک 23- مرکز تحقیقات چشم

purpose: to evaluate refractive state in patients with unilateral congenital nasolacrimal duct obstruction. methods: in this descriptive prospective study, patients with unilateral congenital nasolacrimal duct obstruction scheduled for surgery were enrolled over a period of two years (2007-2009). cycloplegic refractive error in both eyes was measured under anesthesia before surgery (probing, si...

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