Relationship between the morbidity of pterygium and the duration of ultraviolet rays exposure in Sanya,China  

作　　者：YAN Qi-chang WANG Xin-ling BAI Quan-hao WANG Wei GAO Qian ZHANG Jin-song LIU Yang LIU Rong 

机构地区：[1]Department of Ophthalmology, Fourth Affiliated Hospital, China Medical University, Shenyang 110005, China [2]Department of Public Health , Public Health College of China Medical University, Shenyang 110001, China [3]Department of Health Statistics , Public Health College of China Medical University, Shenyang 110001, China

出　　处：《Chinese Medical Journal》2006年第15期1308-1310,共3页中华医学杂志（英文版）

基　　金：This sdudy was supported by grants from National Natural Science Foundation of China (No. 40275036); the Project of High School Science Research of Department of Education in Liaoning Province (No. 2004C026).

摘　　要：Pterygium is sunlight related, ocular-surface lesion that obscures vision. The morbidity varies in different parts of the same country. Several surveys have shown that the countries nearer the equator have higher rate of pterygium than the other regions, the possible reason is due to the low latitude and stronger exposure to ultraviolet rays. The onset of pterygium is closely related to the environment, including ultraviolet rays, sandstorm, dry climate and so on. Prolonged ultraviolet-B radiation is regarded as a risk factor for pterygium, and that could explain its prevalence is much higher in the low latitude area.Pterygium is sunlight related, ocular-surface lesion that obscures vision. The morbidity varies in different parts of the same country. Several surveys have shown that the countries nearer the equator have higher rate of pterygium than the other regions, the possible reason is due to the low latitude and stronger exposure to ultraviolet rays. The onset of pterygium is closely related to the environment, including ultraviolet rays, sandstorm, dry climate and so on. Prolonged ultraviolet-B radiation is regarded as a risk factor for pterygium, and that could explain its prevalence is much higher in the low latitude area.

关 键 词：PTERYGIUM ultraviolet rays exposure time 

分 类 号：R777.33[医药卫生—眼科]