Sannapaneni Krishnaiah

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OBJECTIVE To examine the global prevalence and major risk factors for diabetic retinopathy (DR) and vision-threatening diabetic retinopathy (VTDR) among people with diabetes. RESEARCH DESIGN AND METHODS A pooled analysis using individual participant data from population-based studies around the world was performed. A systematic literature review was(More)
AIM To report the prevalence, risk factors and associated population attributable risk percentage (PAR) for refractive errors in the South Indian adult population. METHODS A population-based cross-sectional epidemiologic study was conducted in the Indian state of Andhra Pradesh. A multistage cluster, systematic, stratified random sampling method was used(More)
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)
PURPOSE To report the prevalence of pseudoexfoliation (PXF) and its associations with ocular diseases in a south Indian population. METHODS This was a population-based, cross-sectional epidemiologic study in the south Indian state of Andhra Pradesh (AP). A total of 10,293 subjects of all ages from one urban and three rural areas representative of the(More)
PURPOSE To assess prevalence, potential risk factors, and population attributable risk percentage (PAR%) for age-related macular degeneration (AMD) in the Indian state of Andhra Pradesh. METHODS A population-based study, using a stratified, random, cluster, systematic sampling strategy, was conducted in the state of Andhra Pradesh in India from 1996 to(More)
PURPOSE To investigate the associations between tobacco smoking and various forms of cataracts among the people of a state in India. METHODS A population-based cross-sectional epidemiologic study was conducted in the south Indian state of Andhra Pradesh (AP). A total of 10,293 subjects of all ages from one urban and three rural areas, representative of(More)
PURPOSE To understand the reasons why people in rural south India with visual impairment arising from various ocular diseases do not seek eye care. MATERIALS AND METHODS A total of 5,573 persons above the age of 15 were interviewed and examined in the South Indian state of Andhra Pradesh covering the districts of Adilabad, West Godavari and Mahaboobnagar.(More)
PURPOSE To determine the distribution of perceived visual ability for functional vision performance among persons with low vision in the Indian state of Andhra Pradesh. METHODS As part of a population-based epidemiologic study, the Andhra Pradesh Eye Disease Study (APEDS), a 16-item visual function questionnaire was designed and applied to 7363 persons(More)
PURPOSE To determine the impact of visual impairment and eye diseases on quality of life (QOL) in an older population of Andhra Pradesh in southern India. METHODS The World Health Organization (WHO) QOL (WHOQOL) instrument was adapted as a health-related quality of life (HRQOL) instrument for administration to adults participating in the Andhra Pradesh(More)
PURPOSE To evaluate whether 23-gauge (23 G) pars plana vitrectomy is associated with earlier visual recovery compared with standard 20-gauge (20 G) pars plana vitrectomy. METHODS Retrospective chart review of patients who underwent pars plana vitrectomy for various indications was performed. Thirty consecutive eyes in each group of 23-G and 20-G pars(More)