نتایج جستجو برای: acute myopia

تعداد نتایج: 503751  

2017
Ann Yi-Chiun Chuang

Myopia has become epidemic in the world. Without effective control, the progression may lead to excessive myopia with severe complications affecting vision and ocular alignment. The genetic factors and environmental factors of myopia are closely interrelated to each other. Asian ethnicity and parental myopia, among other genetic factors, influence the refractive outcome dramatically when enviro...

Journal: :The British journal of ophthalmology 2001
B Seet T Y Wong D T Tan S M Saw V Balakrishnan L K Lee A S Lim

Myopia is a problem of public health concern in Singapore for three reasons. Firstly, the prevalence of myopia (more than −0.5 dioptres (D)) is one of the highest worldwide. Twenty per cent of Singapore children are myopic at 7 years at the start of their primary education, with prevalence exceeding 70% upon completing college education. Other population based studies showed myopia prevalence o...

Journal: :Investigative ophthalmology & visual science 2004
Chung-Ling Liang Eugene Yen Jui-Yung Su Chang Liu Tzu-Yi Chang Naeun Park Ming-Jin Wu Sharon Lee John T Flynn Suh-Hang Hank Juo

PURPOSE To investigate the impact of a positive family history of high myopia on the level and onset of myopia and its ocular components. METHODS A cross-sectional study was conducted. The participants (aged 17 to 45 years) were categorized into four groups: normal, mild, moderate, and high myopia. The age of first glasses for myopia was used as the onset of myopia. The impact of the family h...

Journal: :Optometry 2012
Jeffrey Cooper Erica Schulman Nadine Jamal

This is a review of the current literature describing the effect of atropine, bifocals, and/or contact lenses on slowing the progression of myopia. Cumulative data from a number of studies have demonstrated atropine instilled once a day in myopic eyes resulted in a 90% average reduction of myopia progression, as compared to untreated eyes, i.e., from 0.50 D/year to 0.05 D/year. Pirenzepine, a m...

2006
Yi Pang Dominick M. Maino Guoming Zhang

Myopia is considered to be a leading cause of visual impairment. Furthermore, the prevalence of myopia in young adolescents has increased substantially over the past few decades. Although myopia was identified more than two thousands years ago, a consistently effective approach to myopia control for all patients still eludes clinicians. Among all the treatments mentioned in this review, the mos...

بزازی, نوشین, سمواتی, مرتضی,

Introduction & Objective: Myopia is the most rampant human refractive error. There are many questions about the effect of fasting during Ramadan on myopia among these patients. Due to lack of enough researches on this topic, we decided to do a study to answer this question. Materials & Methods: This cohort study was done on 102 patients at Ramadan month (2007) referred to Besat hospital of...

Journal: :Investigative ophthalmology & visual science 2012
Justin C Sherwin Alex W Hewitt Minas T Coroneo Lisa S Kearns Lyn R Griffiths David A Mackey

PURPOSE We sought to determine whether conjunctival ultraviolet autofluorescence (UVAF), a biomarker of outdoor light exposure, is associated with myopia. METHODS We performed a cross-sectional study on Norfolk Island and recruited individuals aged ≥ 15 years. Participants completed a sun-exposure questionnaire and underwent non-cycloplegic autorefraction. Conjunctival UVAF used a specially a...

Journal: :Investigative ophthalmology & visual science 2008
Jenny M Ip Kathryn A Rose Ian G Morgan George Burlutsky Paul Mitchell

PURPOSE To examine associations between myopia and measures of urbanization in a population-based sample of 12-year-old Australian children. METHODS Questionnaire data on sociodemographic and environmental factors including ethnicity, parental education, and time spent in near work and outdoor activities were collected from 2367 children (75.0% response) and their parents. Population density ...

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