Yunnan Dali Pai Farmers Over 50 Years The Prevalence Of Cataract And Surgical Investigation

Background At present, there are about cataract clinical and basic research a lot. And relevant epidemiological studies have less about minorities, especially the cataract ill and surgery status epidemiological studies less. About 16,000,000 people around the world due to the loss of visual acuity of cataract, cataract is a common and frequently occurring eye, the current cause of blindness in the world prevails. In China, the cause of cataract blindness is also living in the first place. The prevalence of cataract in different parts of the report, India and China are developing countries Araving Eye center2003 survey shows that prevalence of cataract was 61.9%, In China, Cao Xiaoguang survey in 2003 and ping an county in Qinghai Province, Li Lin investigated in 2006 in Nantong City, Jiangsu Province, the survey results are shown prevalence of cataract was 41.84% and 34.87%. As developing countries and less developed regions have a large number of cataract surgery patients can not be timely, resulting in high prevalence of cataract; the same time, the high prevalence of cataract surgery and its tremendous economic burden, it is very need for cataract surgery prevalence and the status of research. Blindness caused by cataracts have become a serious worldwide public health and socio-economic problems. Particularly underdeveloped in China, the native region in western Yunnan Plateau Bai prevalence of cataract and cataract surgery study the situation, it becomes particularly important.Objective Dali City, Yunnan Province, located in central western Yunnan, lying west, north to the east, south, the highest point 4097 meters above sea level, the lowest point of 1340 meters. Subtropical plateau monsoon climate climate, average temperature of 14.9 degrees Celsius, the number of 2227.5 hours of sunshine, the wind is known. Dali Bai is based, multi-ethnic settlements, In 2000, the fifth national census statistics, Dali City, the total population of 521,169 people, including the Bai population accounts for 66.60%. Dali 50 years and older population is 95,567 people, socio-economic situation in the country are less developed level. Yunnan Dali Bai survey of 50 farmers over the age of the prevalence of cataract, cataract and cataract surgical coverage blind social burden rate of the blind to see Bai Prevalence of cataract and cataract surgery in recent years in the area of prevention of blindness the effect of the work for the government to provide the scientific basis for development of blindness prevention policies.Methods The eye part of the investigation of Minority in Yunnan. January 2010, we used cluster sampling method to Dali in Yunnan Province is divided into 259 sampling units, and has commissioned the Office of Prevention of Blindness, Zhongshan Ophthalmic Center, sampling. Dali City,12 randomly selected sampling unit, taken 50 years and over 2742 cases of farmers Bai questionnaire, visual acuity and eye examination. Diagnostic criteria using clinical criteria, pinhole visual acuity less than <0.7.Results Subjects in the 2133 cases, the cataract prevalence was 42.90%. With increasing age, significantly higher prevalence of cataract. After 2000, Dali City, began increasing rates of cataract surgery. Binocular vision in daily life<0.05 as the standard blind, cataract surgical coverage was 17.20%, cataract blind burden was 4.40%. To binocular visual acuity<0.05 as the standard blind, cataract surgical coverage rate was 8.60%, cataract blind burden was 4.40%. People over 70 years old and illiterate persons, the social burden of cataract blind higher, respectively,9.28%, 6.70%.Conclusions Yunnan Dali Bai rural population=50 years of age-related cataract prevalence rate from 42.90%, cataract blind heavy social burden caused by the cataract surgical coverage blind to be improved, the therapeutic effect of cataract surgery to be further strengthened. Bai elderly people in the region of cataract and cataract surgery on the lack of knowledge, fear of cataract surgery strong concerns about the cost of a larger operation. In the elderly population and illiteracy, the cataract is a serious public health problem. Blindness prevention remains the primary task of the work of radical cataract blindness.