نتایج جستجو برای: uncorrected refractive error
تعداد نتایج: 274032 فیلتر نتایج به سال:
INTRODUCTION Refractive error remains one of the primary causes of visual impairment in children worldwide, and the prevalence of refractive error varies widely. The objective of this study was to determine the prevalence of refractive error and study the possible associated factors inducing refractive error among primary school children of Malay ethnicity in the suburban area of Kota Bharu, Ke...
BACKGROUND Uncorrected refractive errors are a leading cause of visual disability globally. This population-based study was done to estimate the prevalence of uncorrected refractive errors in adults aged 30 years and above of village Pawakah, Khyber Pakhtunkhwa (KPK), Pakistan. METHODS It was a cross-sectional survey in which 1000 individuals were included randomly. All the individuals were s...
PURPOSE To evaluate refractive and visual outcomes of secondary piggyback intraocular lens implantation in patients diagnosed as having residual ametropia following segmental multifocal lens implantation. METHODS Data of 80 pseudophakic eyes with ametropia that underwent Sulcoflex aspheric 653L intraocular lens implantation (Rayner Intraocular Lenses Ltd., East Sussex, United Kingdom) to corr...
B Bulletin of the World Health Organization | August 2008, 86 (8) the two schools have remained responsive to the students’ learning context needs by retaining a text-led mode of distance learning amidst strong pressure to switch to web-based learning. Surveys we have conducted indicate that only about 30% of our students are able to access the internet reliably for lengthy periods, making web-...
OBJECTIVE To estimate the global cost of establishing and operating the educational and refractive care facilities required to provide care to all individuals who currently have vision impairment resulting from uncorrected refractive error (URE). METHODS The global cost of correcting URE was estimated using data on the population, the prevalence of URE and the number of existing refractive ca...
Academic implications of uncorrected refractive error: A study of Sokoto metropolitan schoolchildren
BACKGROUND The present study investigated the prevalence of refractive error, visual impairment, and eye diseases in school-aged children in western China. METHODS The survey was done in a representative county (Yongchuan District, Chongqing Municipality) of western China. Cluster random sampling was used to select children aged 6 to 15 years. We conducted door-to-door surveys and eye examina...
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