ArticleBMJ open2019
Temporal trends in the prevalence and causes of visual impairment in the South Indian state of Telangana: a population-based cross-sectional study.
Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.
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Who cites it
11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 21 citations in OpenAlex.
- Barriers and Enablers to Seeking Eye Care Among the Adult Indian Population: A Systematic Review.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026Pooled it
- Approaches for delivery of refractive and optical care services in community and primary care settings.The Cochrane database of systematic reviews · 2024Pooled it
- Description and Evaluation of a Visual Acuity Assessment Paradigm Based on Spatial Frequency-Modulated Form Discrimination.Translational vision science & technology · 2026Article
- Prevalence and temporal trends of vision impairment over two decades among those aged 40 years and older in Nagar Kurnool district in Telangana, India.Eye (London, England) · 2026Article
- Mental health problems during the COVID-19 pandemic among residents of Jimma town: a cross-sectional study.European archives of psychiatry and clinical neuroscience · 2024Article
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- Population-based assessment of barriers for uptake of eye care services among elderly people: Findings from rapid assessment of visual impairment studies from Telangana, India.Indian journal of ophthalmology · 2022Article
- Awareness of cataract and glaucoma in two rural districts of Telangana, India.Indian journal of ophthalmology · 2022Article
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Authors and funding
6 authors at 1 institution in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
objectivesTo investigate the temporal trends in the prevalence and causes of visual impairment (VI) in South India.
designPopulation-based cross-sectional studies conducted during the years 2011-2012 and 2017 using identical study methods and in geographical locations are compared. The L V Prasad Eye Institute established services in Khammam and not in Warangal district after the 2011-2012 study.
settingKhammam and Warangal districts in Telangana, India.
participantsIn total, 5357 participants aged ≥40 years were examined from two districts in the 2011-2012 study and 4923 participants were examined in the 2017 study.
main outcome measuresAge-adjusted and gender-adjusted temporal trends in the prevalence and causes of VI.Blindness and moderate VI (MVI) were defined as presenting visual acuity worse than 6/60 and 6/18-6/60 in the better eye, respectively. VI included MVI and blindness.
resultsNearly 2500 participants were examined in each location in both the 2011-2012 and 2017 studies. In Khammam district, overall VI declined by 2.5% from 15.5% to 13.0% (p<0.001). While there was no significant change in MVI (p=0.566), blindness declined by 3.0% from 5.4% to 2.4% (p<0.001). In Warangal district, the overall VI remained unchanged (p=0.60). While MVI increased by 3% from 9.3% to 12.3% (p=0.001), blindness declined by 3.5% from 6.5% to 3.0% (p<0.001). While MVI due to cataract increased in both districts, there was a significant decline in MVI due to refractive errors in Khammam.
conclusionThere was a significant decline in VI in Khammam district but not in Warangal district. The differential trends in prevalence and causes of VI can be explained by the availability and uptake of eye care services in these two districts.
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