نتایج جستجو برای: residual refractive errors
تعداد نتایج: 245765 فیلتر نتایج به سال:
Background & Objective: Refractive errors (myopia, hyperopia and astigmatism) could lead to an impaired quality of life affect a large proportion of the population worldwide, irrespective of age, sex and ethnic group. Such refractive errors can be easily diagnosed, measured and corrected with spectacles or other refractive corrections to attain normal vision. Since there is paucity of informati...
PURPOSE To investigate the effect of different levels of refractive blur on real-world driving performance measured under day and nighttime conditions. METHODS Participants included 12 visually normal, young adults (mean age = 25.8 ± 5.2 years) who drove an instrumented research vehicle around a 4 km closed road circuit with three different levels of binocular spherical refractive blur (+0.50...
background: ramadan fasting may alter a variety of physiological parameters which by themselves influence ocular system. here, we review the effects of ramadan fasting on the health and function of the eye. materials and methods: literature records in pubmed/medline, web of science, embase, google scholar, and iran medex databases as well as proceedings of related meetings from january 1986 t...
We present a review of keratorefractive and intraocular approaches to managing residual astigmatic and spherical refractive error after cataract surgery, including laser in situ keratomileusis (LASIK), photorefractive keratectomy (PRK), arcuate keratotomy, intraocular lens (IOL) exchange, piggyback IOLs, and light-adjustable IOLs. Currently available literature suggests that laser vision correc...
makes it impossible to express the results in a general and informative manner. We felt, therefore, that it was useful to define two index that can be used for the purposes of such analysis. Metho& The axial and toric components of ametropia are such that it can be seen as a point within a threedimensional reference. The distance between the point and the centre of a reference defines the Refra...
AIM To investigate risk factors associated with strabismus in children born prematurely. METHODS Prospective study of all children born before 32 weeks' gestation between 1 January 1990 and 31 December 1991 in a geographically defined population of approximately 3 million in the Northern Region of the United Kingdom. All children were examined aged 2 years by the same ophthalmologist and paed...
PURPOSE There is currently great interest in comparing data for the prevalence of myopia in different parts of the world, particularly in view of the suggestion that, in recent decades, marked increases have occurred in prevalence among children and young adults in some areas. This work investigates the factors that affect the comparison and interpretation of sets of myopia prevalence data for ...
Rapid assessment methods Rapid assessment methods are a means to undertake a comprehensive assessment of a public health issue using minimum resources within a limited amount of time. Such methods help plan, develop and implement interventions and monitor service delivery. These methods are typically useful in situations where data are needed quickly, and time and cost factors prohibit the use ...
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