目的:调查海南省海口市郊≥50岁人群中视力损伤、严重视力损伤及盲的患病率,并分析其主要原因。方法:选取海口市郊≥50岁人群,随机抽取30个抽样单位的850例进行调查。对受检人员进行矫正视力、外眼、前房、晶状体、玻璃体及眼底检查,调查该人群视力损伤、严重视力损伤及盲的患病率并分析主要原因。结果:调查850例中受检人员为786例,受检率为92.47%,视力损伤、严重视力损伤及盲的患病率分别为2.67%,0.64%和2.54%。致视力损伤、严重视力损伤及盲主要眼病依次为白内障、眼后节疾病、角膜瘢痕及其他疾病。结论:海口市郊≥50岁人群视力损伤、严重视力损伤及盲的首要病因是白内障,眼后节疾病、角膜瘢痕等疾患所致盲也占一定比例。 

AIM:To investigate the prevalence of visual impairment, severe visual impairment and blindness, leading cause of these impairments among adults aged ≥50 years in Haikou outskirts of Hainan.METHODS:Random sampling analysis was performed in 850 individuals chosen as the sample, aged ≥50 years in 30 villages of Sanya. Corrected vision, external eye, anterior chamber, lens, vitreous, fundus were examined by ophthalmologists. The prevalence of visual impairmen, severe visual impairment and blindness was calculated, and the main cause was analyzed.RESULTS:Totally 786 individuals among 850 were examined. The response rate was 92.47%, the prevalence of visualimpairmen, severe visual impairment and blindness is 2.67%, 0.64% and 2.54%, resulting chiefly from cataract, posterior segment ocular disease and corneal scar.CONCLUSION:The epidemiological results show that the main cause of visualimpairmen, severe visual impairment and blindness is cataract. But the other causes of blindness such as posterior segment ocular disease and corneal scar can not be neglected.