AI Article Synopsis
- The study focused on the prevalence and causes of visual impairment in a rural area of north-east China, specifically Bin County, Harbin.
- Nearly 86% of participants over 40 were included, revealing a 9.6% prevalence of visual impairment, with cataracts being the leading cause.
- The findings indicated a higher prevalence among women and older individuals, and emphasized the necessity for visual impairment prevention, particularly for elderly women and those with lower education levels.
Article Abstract
Purpose: To investigate the prevalence and causes of visual impairment in a rural population in north-east China.
Methods: A population-based study was conducted within Bin County, Harbin of north-east China. Low vision and blindness were defined using the World Health Organization categories of visual impairment. The prevalence of visual impairment was estimated, and causes were identified based on best-corrected visual acuity (BCVA) as well as presenting visual acuity (VA).
Results: Out of 5764 people, 4956 (86.01%) aged older than 40 participated in the study. The prevalence of visual impairment, low vision and blindness based on presenting VA was 9.6% (BCVA, 6.6%), 7.7% (BCVA, 4.9%) and 1.9% (BCVA, 1.7%), respectively. Taking the presenting VA, cataract (44%) was the most common cause for visual impairment followed by uncorrected refractive error (24%), treatable causes of visual impairment accounted for 68% of the total cases. Cataract (59%) and glaucoma (15%) were leading causes for blindness based on presenting VA. According to BCVA, cataract was the leading cause of visual impairment and blindness (58% and 60%, respectively), followed by glaucoma (17% and 15%, respectively). The prevalence of visual impairment was higher among women than men (p<0.0001) and increasing with age (p<0.0001) and decreasing with increasing education level (p=0.0075).
Conclusion: Visual impairment was a serious public health problem in this rural population, with most of it easily remedied. Results highlighted the need for visual impairment prevention programs to an increasing number of elderly people, with a special emphasis on female and those with little or no education.
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| http://dx.doi.org/10.1111/j.1755-3768.2009.01768.x | DOI Listing |
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