نتایج جستجو برای: eyeglasses
تعداد نتایج: 6642 فیلتر نتایج به سال:
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This paper examines the prevalence of vision problems and the accessibility to and quality of vision care in rural China. We obtained data from 4 sources: 1) the National Rural Vision Care Survey; 2) the Private Optometrists Survey; 3) the County Hospital Eye Care Survey; and 4) the Rural School Vision Care Survey. The data from each of the surveys were collected by the authors during 2012. Thi...
Introduction: Yellow-tinted, low plus eyeglasses have been advertised as a cure for computer vision syndrome. In the first of two studies, the claims of one brand of “digital performance eyewear” are evaluated. Methods: A crossover study of 36 subjects was conducted to examine the difference between low plus (+0.50D) yellowtinted computer spectacles and placebo lenses. The two pairs of eyeglass...
PURPOSE To analyze the results of recall absent schoolchildren to eye health projects. METHODS Cross-sectional study. Visual screening was performed in schoolchildren attending 1(st) to 4(th) grades at public schools, from 7 to 10 years-old, to select and forward to complete ophthalmic evaluation. The projects were performed during weekends, at a public school, in the same municipality. Free ...
Eyeglasses, required for functional vision by nearly half the world's population, are still needed by more than a billion people. There are a number of constraints on the provision of eyeglasses: product cost, durability, and appearance; traditional approaches to evaluating refraction; and sustainably scaling potential distribution methods. We offer our experience with an immigrant population i...
This study was undertaken to design an updated connection system for an eyeglass-supported nasal prosthesis using rapid prototyping techniques. The substructure was developed with two main endpoints in mind: the connection to the silicone and the connection to the eyeglasses. The mold design was also updated; the mold was composed of various parts, each carefully designed to allow for easy rele...
Patients with type 2 diabetes who require insulin therapy are commonly elderly and have poor visual acuity. In this study, we examined the clinical usefulness of the indicator magnifying window (IMW) for elderly patients with type 2 diabetes. We recruited 50 patients with type 2 diabetes over the age of 60 who had used insulin pens for glucose control. They were asked to set the insulin pen at ...
The recent editorial appearing in IOVS entitled ‘‘What to do about racial disparities in access to glasses among children in the US?" omitted an important consideration. When the article called for the United States to ‘‘guarantee all children access to basic, inexpensive spectacles,’’ it failed to reference an important new part of the Affordable Care Act (ACA) highly relevant to the goal of i...
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