نتایج جستجو برای: refractive error

تعداد نتایج: 271299  

2017
L Fernández-Vega-Cueto V Romano R Zaldivar C H Gordillo F Aiello D Madrid-Costa J F Alfonso

Keratoconus provides a decrease of quality of life to the patients who suffer from it. The treatment used as well as the method to correct the refractive error of these patients may influence on the impact of the disease on their quality of life. The purpose of this review is to describe the evidence about the conservative surgical treatment for keratoconus aiming to therapeutic and refractive ...

2017
Kjell Gunnar Gundersen Rick Potvin

PURPOSE The purpose of this study was to provide clinical outcomes data related to secondary intraocular lens (IOL) implantation for the correction of residual refractive error after cataract surgery. PATIENTS AND METHODS A chart review was conducted to identify all eyes implanted with the monofocal spherical or toric AddOn® secondary IOL. Data were collated from charts where uncomplicated in...

Journal: :Vision Research 1995
E. Letko M. Filipec Z. Hašková D. Jeníková L. Šplíchal

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...

Journal: :Vision Research 1995
J.Ø. Hjortdal L. Erdman N. Ehlers

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...

Journal: :Investigative ophthalmology & visual science 2014
Mary Qiu Sophia Y Wang Kuldev Singh Shan C Lin

PURPOSE To identify risk factors for inadequately corrected refractive error in the United States. METHODS This cross-sectional study included 12,758 participants 12 years of age and older from the 2005 to 2008 National Health and Nutrition Examination Survey. The primary outcome was the proportion of individuals with inadequate refractive correction for whom refractive correction would resul...

2015
Seung-Hyun Kim Young-Woo Suh Yong-Min Choi Ji-Yoon Han Gi-Tae Nam Eun-Joo You Yoonae A. Cho

PURPOSE To investigate the effect of watching 3-dimensional (3D) television (TV) on refractive error in children. METHODS Sixty healthy volunteers, aged 6 to 12 years, without any ocular abnormalities other than refractive error were recruited for this study. They watched 3D TV for 50 minutes at a viewing distance of 2.8 meters. The image disparity of the 3D contents was from -1 to 1 degree. ...

2014
Jin A. Choi Kyungdo Han Yong-Moon Park Chan Kee Park

BACKGROUND To investigate the distribution of intraocular pressure (IOP) and refractive errors according to age group in a representative sample of non-glaucomatous Korean adults. METHODS A total of 7,277 adults (≥ 19 years) who participated in the Korea National Health and Nutrition Examination Survey (KNHANES) from 2008 to 2011 underwent ophthalmic examination were divided into three groups...

2014
Jafer Kedir Abonesh Girma

BACKGROUND Refractive error is one of the major causes of blindness and visual impairment in children; but community based studies are scarce especially in rural parts of Ethiopia. So, this study aims to assess the prevalence of refractive error and its magnitude as a cause of visual impairment among school-age children of rural community. METHODS This community-based cross-sectional descript...

Journal: :Investigative ophthalmology & visual science 2011
Donald O Mutti Loraine T Sinnott G Lynn Mitchell Lisa A Jones-Jordan Melvin L Moeschberger Susan A Cotter Robert N Kleinstein Ruth E Manny J Daniel Twelker Karla Zadnik

PURPOSE To investigate whether relative peripheral hyperopia is a risk factor for either the onset of myopia in children or the rate of myopic progression. METHODS The risk of myopia onset was assessed in 2043 nonmyopic third-grade children (mean age ± SD = 8.8 ± 0.52 years) participating in the Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study between 199...

2017
Katie M. Williams Pirro G. Hysi Ekaterina Yonova-Doing Omar A. Mahroo Harold Snieder Christopher J. Hammond

Myopia, or near-sightedness, is our most common eye condition and the prevalence is increasing globally. Visual impairment will occur if uncorrected, whilst high myopia causes sight-threatening complications. Myopia is associated with higher intelligence. As both are heritable, we set out to examine whether there is a genetic correlation between myopia and intelligence in over 1,500 subjects (a...

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