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PURPOSE To determine the prevalence of presbyopia in the state of Andhra Pradesh in south India. METHODS Comprehensive ocular examinations including logMAR (logarithm of the minimum angle of resolution) distance and near (presenting and best corrected) visual acuity, slit lamp biomicroscopy of the anterior segment, and dilated posterior segment(More)
OBJECTIVE To determine the prevalence of blindness and vision impairment in a rural population of southern India. DESIGN A population-based cross-sectional study. PARTICIPANTS A total of 17200 subjects aged 6 years or older, including 5150 subjects aged 40 years or older from 50 clusters representative of three southern districts of Tamil Nadu in(More)
AIMS To assess the prevalence of vision impairment, blindness, and cataract surgery and to evaluate visual acuity outcomes after cataract surgery in a south Indian population. METHODS Cluster sampling was used to randomly select a cross sectional sample of people > or =50 years of age living in the Tirunelveli district of south India. Eligible subjects in(More)
PURPOSE To determine the prevalence and risk factors for pseudoexfoliation in a rural population of southern India. DESIGN A population-based cross-sectional study of pseudoexfoliation with and without glaucoma in rural southern India. METHOD A total of 5,150 subjects aged 40 years and older from 50 clusters representative of three southern districts of(More)
OBJECTIVE To determine the magnitude of vitreoretinal disorders in a rural southern Indian population. METHODS Cluster sampling was used to identify individuals 40 years and older in Tamil Nadu in southern India. Demographic details, vision measurement and refraction using logMAR charts, anterior segment slitlamp examination, dilated posterior segment(More)
PURPOSE To compare the cost of phacoemulsification with foldable lenses with that of manual small-incision cataract surgery (SICS) in a hospital setting. DESIGN Average cost comparision between 2 surgical techniques. PARTICIPANTS Four hundred patients and 4 surgeons. METHODS A single masked randomized controlled clinical trial was conducted previously(More)
PURPOSE To determine the prevalence of glaucoma and risk factors for primary open-angle glaucoma in a rural population of southern India. DESIGN A population-based cross-sectional study. PARTICIPANTS A total of 5150 subjects aged 40 years and older from 50 clusters representative of three southern districts of Tamil Nadu in southern India. METHODS All(More)
OBJECTIVES To determine the prevalence of lens opacities in an older population in rural southern India. METHODS A cross-sectional study of 5150 persons aged 40 years and more who were selected as part of a representative sample from three southern districts of the state of Tamil Nadu in southern India. All lenses were graded and classified for opacities(More)
PURPOSE To evaluate and compare a stereo-biomicroscopic technique of ocular torsion measurement with fundus photographic technique. METHODS This prospective masked observational study included 72 eyes of 36 consecutive subjects with normal ocular motility. The disc-foveal angle was measured by two masked investigators using a slitlamp(More)