Abstract：
PURPOSE:To assess blindness prevalence and that caused specifically by cataract in rural southern China. DESIGN:Population-based, cross-sectional study. PARTICIPANTS:A total of 5342 persons older than 50 years of age. METHODS:Visual acuity and eye examinations were performed in the summer of 1997 in a random sample of villages in Doumen County. Differences in blindness prevalence associated with age, gender, and education were explored using logistic regression. The survey was preceded by a pilot study in which operational methods were refined and quality assurance measures were performed. MAIN OUTCOME MEASURES:Distance visual acuity and lens status. RESULTS:Bilateral blindness (presenting visual acuity < 0.10) was found in 4.37% (95% confidence interval, 3.67%-5.06%). Blindness was associated with increasing age (P < 0.001) and with the lack of education (P < 0.01). Cataract was the principal cause of blindness in at least one eye in 61.5% of blind people, with refractive error responsible for another 10%. An estimated 40% of the cataract blind were operated on; surgical coverage was lowest among the elderly, women, and those without schooling, although not at statistically significant levels. CONCLUSIONS:Despite the increased attention given to eye care in Doumen County, blindness remains a major public health problem. Cataract surgery is reaching fewer than half of those who could benefit from it.
journal_name
Ophthalmologyjournal_title
Ophthalmologyauthors
Li S,Xu J,He M,Wu K,Munoz SR,Ellwein LBdoi
10.1016/S0161-6420(99)90459-1subject
Has Abstractpub_date
1999-08-01 00:00:00pages
1602-8issue
8eissn
0161-6420issn
1549-4713pii
S0161-6420(99)90459-1journal_volume
106pub_type
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