ArticleInternational journal of ophthalmology2018
Prevalence of visual impairment and related factors in Nangarhar Province of Afghanistan: a cross sectional study.
Article in International journal of ophthalmology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.
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10 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.
- Comparing the accuracy of new intraocular lens power calculation formulae in short eyes after cataract surgery: a systematic review and meta-analysis.International ophthalmology · 2022Pooled it
- Global, regional, and national trends in DALYs for blindness and vision loss in teenagers and young adults, 1990-2019: an age-period-cohort analysis based on the Global Burden of Disease Study 2019.Frontiers in medicine · 2025Article
- Prevalence, causes and associated factors of visual impairment and blindness among older population in outreach site, Northwest Ethiopia. A dual center cross-sectional study.African health sciences · 2023Article
- Visual Impairment and Its Associated Factors Among Hypertensive Patients in Amhara Region Referral Hospitals, Ethiopia.Clinical ophthalmology (Auckland, N.Z.) · 2023Article
- Prevalence and risk factors for visual impairment among elderly patients attending the eye clinic at Mulago National Referral Hospital, Uganda: a cross-sectional study.African health sciences · 2022Article
- Rapid assessment of prevalence of blindness and cataract surgery in Kabul province, Afghanistan.BMJ open ophthalmology · 2021Article
- Proportion, Causes and Associated Factors of Blindness Among Adult Patients Attending Tertiary Eye Care and Training Center in Ethiopia.Clinical optometry · 2021Article
- Frequency of presenting visual acuity and visual impairment in Chinese college students.International journal of ophthalmology · 2020Article
- Proportion and Associated Factors of Low Vision among Adult Patients Attending at University of Gondar Tertiary Eye Care and Training Center, Gondar Town, Ethiopia.Journal of ophthalmology · 2020Article
- Prevalence of visual impairment and its association with vision-related quality of life among elderly persons in a resettlement colony of Delhi.Journal of family medicine and primary care · 2019Article
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Authors and funding
2 authors at 2 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
aimTo determine the prevalence, main causes, and related factors of visual impairment (VI) among people aged 50y and over in Jalalabad City and four surrounding districts of Nangarhar Province of Afghanistan.
methodsThe data for the population based cross-sectional study was collected in 2015. The calculated sample size was 1353, allocated to urban-rural strata using probability proportion to size method. At the end of the study, 1281 people participated in to the study. VI was defined as presenting visual acuity (VA) of less than 6/18 and blindness as VA less than 3/60 in the better eye by using Snellen chart only. Data was analyzed using IBM SPSS 21.0 software.
resultsThe prevalence of VI was 22.6% (95%CI, 20%-25%) of which 13.9% (95%CI, 12%-16%) was low vision and 8.7% (95%CI, 7%-10%) was blindness. The most common causes of the VI were cataract (52.8%), followed by uncorrected refractive error (URE) (26.9%) and glaucoma (8.6%). Number one cause of the low vision was URE (42%), followed by cataract, glaucoma, age-related macular degeneration (AMD) and diabetic retinopathy (DR), while for blindness they are cataract (72%), other posterior segment disorders, glaucoma, URE and AMD. Illiteracy, bad economic status, hypertension and overweight were factors independently associated with both VI and low vision, whereas, age, illiteracy, bad economic status, hypertension and using of sunglasses were independently associated with blindness.
conclusionCataract, URE, glaucoma, AMD and DR are the leading causes of VI and blindness in the study area. They are mostly avoidable. In order to decrease the burden of VI and blindness in the study area as well as the whole country, it is strongly recommended to apply the prevention policies of VI and blindness.
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