Prevalence and causes of visual impairment in elderly Amis aborigines in eastern Taiwan (the Amis Eye Study)
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To investigate the prevalence and causes of visual impairment in elderly Amis aborigines in Eastern Taiwan.
Population-based cross-sectional study of visual impairment of elderly Amis (65 years of age or older). We conducted ocular examinations on 2,316 participants, which represent 61.2 % of the elderly population. We used WHO criteria to identify visual impaired subjects, and the causes were analyzed.
Ninety-four subjects were identified with low vision and nineteen were blind. The prevalence of low vision was 4.06 % (95 % confidence interval, 3.26, 4.56 %); that of blindness was 0.82 % (95 % confidence interval, 0.45, 1.19 %). Cataracts (47.79 %) were the main cause of visual impairment, followed by age-related macular degeneration (15.93 %), corneal opacity (7.96 %), optic neuropathy (7.96 %), diabetic retinopathy (5.31 %), and retinitis pigmentosa (2.65 %). Glaucoma was a minor cause of visual impairment. There were no significant gender differences in the prevalence and specific causes of visual impairment.
The prevalence of treatable causes of vision impairment, for example cataracts and corneal opacity, is high among the elderly Amis aborigines. They would, therefore, benefit from a more aggressive and in-depth eye-care program as a blindness-prevention strategy.
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- Prevalence and causes of visual impairment in elderly Amis aborigines in eastern Taiwan (the Amis Eye Study)
Japanese Journal of Ophthalmology
Volume 56, Issue 6 , pp 624-630
- Cover Date
- Print ISSN
- Online ISSN
- Springer Japan
- Additional Links
- Amis elderly aborigines
- Visual impairment
- Low vision
- Industry Sectors
- Author Affiliations
- 1. Department of Ophthalmology, Buddhist Tzu Chi General Hospital, 707, Section 3, Chung-Yang Road, Hualien, 97002, Taiwan
- 3. Buddhist Tzu Chi General Hospital, Yuli Branch, No. 1-1, Mincyuan St., Yuli Township, Hualien County, 981, Taiwan
- 2. Department of Ophthalmology and Visual Science, Tzu Chi University, 701, Section 3, Chung-Yang Road, Hualien, 97002, Taiwan