Population Based Assessment of Prevalence and Causes of Vision Impairment in the North-eastern State of Tripura, India – The Tripura Eye Survey

Marmamula, Srinivas; Yellapragada, Shashank; Khanna, Rohit C

doi:10.1080/09286586.2020.1731833

Cited by 8 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The prevalence of PVI and blindness in this study (mild VI: 4.1%, moderate VI: 1.7%, and blindness: 0.4%) was lower than that reported in several other population-based studies of similar age ranges. These include the China Nine Province Survey (mild VI: 20.4%, moderate to severe VI: 10.3%, and blindness: 1.66%), [ 16 ] the National Eye Health Survey in Australia (VI: 6.6%), [ 17 ] and the Tripura Eye Survey (VI: 8.7% and blindness: 1.5%) [ 18 ]. This could be due to the demography of our study population, with over 70% of the population being younger than 60 years due to a large number of young expatriates.…”

Section: Discussionmentioning

confidence: 99%

Prevalence, Causes, and Risk Factors of Visual Impairment in Emiratis and Non-Emiratis of Dubai: A Subnational Population-Based Cross-Sectional Survey

Taryam

Rabiu

AlBanna

et al. 2022

Journal of Ophthalmology

View full text Add to dashboard Cite

Purpose. To study the prevalence, causes, and risk factors of visual impairment (VI) among the Dubai Emiratis and non-Emiratis. Methods. The survey was a population-based cross-sectional eye health study conducted 2019-2020. Cluster sampling was used to randomly select local (Emirati) and expatriate (non-Emirati) Dubai residents aged 40 years and older. Ocular examinations were conducted in selected eye clinics to determine the visual acuity (VA) and cause(s) of VI if any. Trained nurses, optometrists, and ophthalmologists did the examinations. VA was measured using ETDRS visual chart. The World Health Organization VI and blindness definitions and classifications for the cause(s) of VI were used. Results. A total of 892 participants were included in the final analysis. The mean age [SD] was 52.09 [9.48] years, with 55.8% as males. Prevalence of presenting mild, moderate, and severe VI was 4.7% (2.94–7.11%), 1.8% (0.78–3.5%), and 0% for Emiratis, and 3.6% (2.06–5.76), 1.6% (0.63–3.21), and 0% for non-Emiratis, respectively. Four Emirati participants were blind, with a prevalence of 0.9% (0.25%–2.28%). Men had lower likelihood of VI than women (odds ratio [OR] (95% CI): 0.42 (0.24–0.77)) after adjustment for covariates. Diabetes (OR (95% CI): 1.91 (1.04–3.52)) was an independent risk factor for VI. Higher education level was associated with a lower likelihood of VI (OR (95% CI): 0.34 (0.13–0.89). Leading causes of VI among Emiratis were uncorrected refractive error (52%) and cataract (17.2%). Glaucoma, optic atrophy, and absent globe were the causes of blindness. Conclusions. Prevalence of VI is comparably low with leading causes readily treatable. An effective strategy to improve spectacle correction and cataract services would reduce the VI burden.

show abstract

Section: Discussionmentioning

confidence: 99%

Prevalence, Causes, and Risk Factors of Visual Impairment in Emiratis and Non-Emiratis of Dubai: A Subnational Population-Based Cross-Sectional Survey

Taryam

Rabiu

AlBanna

et al. 2022

Journal of Ophthalmology

View full text Add to dashboard Cite

show abstract

“…High-level results for near and distance glasses are combined in table 4, with specific results for each type described separately in-text. All included studies and indicators are available for near and distance glasses in online supplemental appendix 922 50–100 and grouped glasses in online supplemental appendix 10 27 30 40 51–55 62–65 72 76 78 80 81 84 86 95 101–202. Need indicators for grouped glasses are also visualised in online supplemental appendix 12.…”

Section: Resultsmentioning

confidence: 99%

Estimating need and coverage for five priority assistive products: a systematic review of global population-based research

et al. 2022

View full text Add to dashboard Cite

IntroductionTo improve access to assistive products (APs) globally, data must be available to inform evidence-based decision-making, policy development and evaluation, and market-shaping interventions.MethodsThis systematic review was undertaken to identify studies presenting population-based estimates of need and coverage for five APs (hearing aids, limb prostheses, wheelchairs, glasses and personal digital assistants) grouped by four functional domains (hearing, mobility, vision and cognition).ResultsData including 656 AP access indicators were extracted from 207 studies, most of which (n=199, 96%) were cross-sectional, either collecting primary (n=167) or using secondary (n=32) data. There was considerable heterogeneity in assessment approaches used and how AP indicators were reported; over half (n=110) used a combination of clinical and self-reported assessment data. Of 35 studies reporting AP use out of all people with functional difficulty in the corresponding functional domains, the proportions ranged from 4.5% to 47.0% for hearing aids, from 0.9% to 17.6% for mobility devices, and from 0.1% to 86.6% for near and distance glasses. Studies reporting AP need indicators demonstrated >60% unmet need for each of the five APs in most settings.ConclusionVariation in definitions of indicators of AP access have likely led to overestimates/underestimates of need and coverage, particularly, where the relationship between functioning difficulty and the need for an AP is complex. This review demonstrates high unmet need for APs globally, due in part to disparate data across this sector, and emphasises the need to standardise AP data collection and reporting strategies to provide a comparable evidence base to improve access to APs.

show abstract

“…Several studies have reported the prevalence of VI using the RAVI methodology among participants aged Open access ≥40 years in Andhra Pradesh, Telangana and other parts of India. 14 15 17-22 22 23 23 24 The prevalence of VI ranges from 8.7% in Tripura, 24 10% in Krishna district in Andhra Pradesh, 15 11.4% in Delhi, 22 12.8% in Ganjam and Khordha districts in Odisha, 23 12.8% in Akividu region West Godavari and Krishna districts 17 and 13.7% in Mahbubnagar and Adilabad districts in Telangana. 14 These are comparable to the 11.3% found in the current study.…”

Section: Discussionmentioning

confidence: 99%

Cross-sectional study of prevalence, causes and trends in visual impairment in Nirmal District, Telangana, India: Nirmal Eye Evaluation for Trends study

Marmamula,

Chinya,

Yelagondula

et al. 2024

BMJ Open

Self Cite

View full text Add to dashboard Cite

ObjectiveTo determine the prevalence, causes and risk factors associated with visual impairment (VI) in the Nirmal district of Telangana, India, using extended Rapid Assessment of Visual Impairment (RAVI) methodology.DesignCross-sectional study.SettingCommunity setting.ParticipantsParticipants aged ≥16 years were enumerated from 90 randomly selected clusters and 4629/5400 (85.7%) participants were examined. Presenting visual acuity (VA) was assessed using a Snellen chart with E optotypes at a 6 m distance. Near vision was assessed binocularly using an N notation chart with tumbling E optotypes at a 40 cm distance. An anterior segment examination done followed by distance direct ophthalmoscopy at 50 cm. Non-mydriatic fundus images were obtained. VI was defined as presenting VA worse than 6/12 in the better eye. The prevalence of VI in the current study was compared with a RAVI study conducted in 2014 to assess the trends in VI among those aged ≥40 years.Primary outcomePrevalence, causes and risk factors for VI.ResultsAmong those examined, 55% were women, 53% had at least school-level education, 2.3% self-reported diabetes and 8.7% self-reported hypertension. The prevalence of VI was 8.81% (95% CI 8.01% to 9.67%). Overall, uncorrected refractive errors (49.5%) were the leading cause of VI, followed by cataracts (40.2%) and posterior segment diseases (4.9%). Among those aged ≥40 years, the prevalence of VI declined by 19.3% compared with the 2014 baseline study (from 20.2% to 16.3%; p<0.01).ConclusionThe extended RAVI study conducted in the Nirmal district showed a considerable decline in the prevalence of VI. Targeted interventions are needed to provide adequate eye care for the high-risk groups in this district.

show abstract

Population Based Assessment of Prevalence and Causes of Vision Impairment in the North-eastern State of Tripura, India – The Tripura Eye Survey

Cited by 8 publications

References 10 publications

Prevalence, Causes, and Risk Factors of Visual Impairment in Emiratis and Non-Emiratis of Dubai: A Subnational Population-Based Cross-Sectional Survey

Prevalence, Causes, and Risk Factors of Visual Impairment in Emiratis and Non-Emiratis of Dubai: A Subnational Population-Based Cross-Sectional Survey

Estimating need and coverage for five priority assistive products: a systematic review of global population-based research

Cross-sectional study of prevalence, causes and trends in visual impairment in Nirmal District, Telangana, India: Nirmal Eye Evaluation for Trends study

Contact Info

Product

Resources

About