AIM: To determine the prevalence and risk factors for eye diseases, blindness, and low vision in Tibet, and to assist the development of eye disease prevention and treatment schemes.METHODS: We carried out a survey of...AIM: To determine the prevalence and risk factors for eye diseases, blindness, and low vision in Tibet, and to assist the development of eye disease prevention and treatment schemes.METHODS: We carried out a survey of eye diseases among a population living at high altitude. A total of 1 115 Tibetan permanent residents aged 40 years or older from the towns and villages of Qushui County, Lhasa Prefecture, Tibet Autonomous Region, participated in this study. All participants completed a detailed questio-nnaire, and underwent presenting and pinhole visual acuity tests,and a comprehensive ophthalmic examination.RESULTS: There were 187 blind eyes (8.43%), 231 eyes with low vision (10.41% ). The leading cause of visual impairment was cataract of 55.0% (101/187) blindness and of 50.2% (116/231) low vision, followed by fundus lesions of 22.9% blindness and 23.8% low vision, while only a low prevalence of glaucoma of 9.6% blindness and 1.7% low vision was observed. The analysis of 2 219 eyes showed that the most common external eye disease was pterygium (27.2%) in Tibet.CONCLUSION: The high prevalence of blindness and low vision in the Tibetan population at high altitude is a serious public health issue. There is a need to establish and maintain an appropriate effective eye care program in Tibet.展开更多
Purpose: research the etiology of vision impairment in target persons over 45 years old in Doumen county , Guangdong province.Methods: Depending on the prevalences of the blindness among the person aged over 50 years,...Purpose: research the etiology of vision impairment in target persons over 45 years old in Doumen county , Guangdong province.Methods: Depending on the prevalences of the blindness among the person aged over 50 years, the theoretic sample rate is 1 000/4 8733×100%=2. 05%. The 8 districts were divided into 3 parts according to the local economic situation and the proportion of the population in the areas. In fact, the sampling rate is 932/ 10055 = 88.34%.Results:W’e found that impairment 【0. 3 accounted for 10. 94%. The prevalence of bilateral blindness and low vision was 1. 61% and 3. 22%, respectively. Both prevalences of blindness and low vision were increased with age. The leading cuase of blindness was cataract (45. 2%). The second was corneal opacity (16. 7% ). Prevalentces of the low vision and the blindness were higher in females than in males (P【0. 005).Conclusions: Curable and preventable diseases were the leading cause for the blindness (70%). Prevalences of blindness and the low vision展开更多
基金National Natural Science Foundation of China (No. 81070716)
文摘AIM: To determine the prevalence and risk factors for eye diseases, blindness, and low vision in Tibet, and to assist the development of eye disease prevention and treatment schemes.METHODS: We carried out a survey of eye diseases among a population living at high altitude. A total of 1 115 Tibetan permanent residents aged 40 years or older from the towns and villages of Qushui County, Lhasa Prefecture, Tibet Autonomous Region, participated in this study. All participants completed a detailed questio-nnaire, and underwent presenting and pinhole visual acuity tests,and a comprehensive ophthalmic examination.RESULTS: There were 187 blind eyes (8.43%), 231 eyes with low vision (10.41% ). The leading cause of visual impairment was cataract of 55.0% (101/187) blindness and of 50.2% (116/231) low vision, followed by fundus lesions of 22.9% blindness and 23.8% low vision, while only a low prevalence of glaucoma of 9.6% blindness and 1.7% low vision was observed. The analysis of 2 219 eyes showed that the most common external eye disease was pterygium (27.2%) in Tibet.CONCLUSION: The high prevalence of blindness and low vision in the Tibetan population at high altitude is a serious public health issue. There is a need to establish and maintain an appropriate effective eye care program in Tibet.
文摘Purpose: research the etiology of vision impairment in target persons over 45 years old in Doumen county , Guangdong province.Methods: Depending on the prevalences of the blindness among the person aged over 50 years, the theoretic sample rate is 1 000/4 8733×100%=2. 05%. The 8 districts were divided into 3 parts according to the local economic situation and the proportion of the population in the areas. In fact, the sampling rate is 932/ 10055 = 88.34%.Results:W’e found that impairment 【0. 3 accounted for 10. 94%. The prevalence of bilateral blindness and low vision was 1. 61% and 3. 22%, respectively. Both prevalences of blindness and low vision were increased with age. The leading cuase of blindness was cataract (45. 2%). The second was corneal opacity (16. 7% ). Prevalentces of the low vision and the blindness were higher in females than in males (P【0. 005).Conclusions: Curable and preventable diseases were the leading cause for the blindness (70%). Prevalences of blindness and the low vision