نتایج جستجو برای: refractive error

تعداد نتایج: 271299  

2017
Joshua Foreman Jing Xie Stuart Keel Hugh R Taylor Mohamed Dirani

OBJECTIVE To present treatment coverage rates and risk factors associated with uncorrected refractive error in Australia. METHODS Thirty population clusters were randomly selected from all geographic remoteness strata in Australia to provide samples of 1738 Indigenous Australians aged 40 years and older and 3098 non-Indigenous Australians aged 50 years and older. Presenting visual acuity was ...

Journal: :Nigerian journal of clinical practice 2014
K Malu C Ojabo

OBJECTIVE This study was carried out to determine the prevalence and pattern of refractive error in patients presenting to a private hospital. MATERIALS AND METHODS Records of all patients who presented at the hospital from 2000 to 2009 with visual acuity (VA) of 6/9 or less and showed improvement in distance vision of one or more lines with refraction were reviewed. The eye with the better p...

2014
Sergio Latorre-Arteaga Diana Gil-González Olga Enciso Aoife Phelan Ángel García-Muñoz Johannes Kohler

BACKGROUND Refractive error is defined as the inability of the eye to bring parallel rays of light into focus on the retina, resulting in nearsightedness (myopia), farsightedness (Hyperopia) or astigmatism. Uncorrected refractive error in children is associated with increased morbidity and reduced educational opportunities. Vision screening (VS) is a method for identifying children with visual ...

Journal: :Investigative ophthalmology & visual science 2014
Lisa A Jones-Jordan Loraine T Sinnott Nicholas D Graham Susan A Cotter Robert N Kleinstein Ruth E Manny Donald O Mutti J Daniel Twelker Karla Zadnik

PURPOSE We determined the correlation between sibling refractive errors adjusted for shared and unique environmental factors using data from the Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study. METHODS Refractive error from subjects' last study visits was used to estimate the intraclass correlation coefficient (ICC) between siblings. The correlation mode...

Journal: :Clinical & experimental optometry 2015
Eden R Mashayo Ving Fai Chan Prasidh Ramson Farai Chinanayi Kovin S Naidoo

BACKGROUND In Tanzania, the prevalence of refractive error and presbyopia have not been comprehensively assessed, limiting appropriate planning and implementation of delivery of vision care. This study sought to determine the prevalence of refractive error and presbyopia, spectacle coverage and the barriers to uptake of refractive services in people aged 15 years and older in the Kahama distric...

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