目的:对湖北地区中老年白内障人群的角膜散光情况进行调查,找出其变化规律。方法:对随机抽取的4558例湖北地区中老年白内障居民进行角膜散光度数及轴向的测定,并分析其变化规律。结果:湖北地区中老年白内障人群中,角膜散光在50~100度范围内所占人数比例最大,男女混合人群中所占比例为31.90%。人群中男女各个年龄段,角膜散光均以50~100度为人数最多,并且除49岁以下年龄段外,角膜顺逆规散光均呈现逆规散光人数多于顺规散光趋势。结论:湖北地区中老年白内障人群中,男女各个年龄段,角膜散光在50~100度范围内所占人数比例最大,并且除49岁以下年龄段外,角膜顺逆规散光均呈现逆规散光人数多于顺规散光趋势。

AIM: To determine the prevalence and development regular pattern of astigmatism in cataract of middle aged and senior citizens in a district of Hubei. METHODS: The data of corneal astigmatism and astigmatic axial in 4558 cases with cataract of middle aged and senior citizens with cataract in a district of Hubei were measured. RESULTS: Corneal astigmatism was 50-100 degree for 31.90% in cataract of middle aged and senior citizens. The percentage of 50-100 degree of astigmatism was maximum in every age group and gender, and the tendency was that number of person against the rule was more than that with the rule in cataract of middle aged and senior citizens. CONCLUSION: Corneal astigmatism of 50-100 degree is present in most cataract of middle aged and senior citizens,it is maximum and higher in about 31.90%, with no differences between the various age groups and gender. There is tendency that the number of person against the rule astigmatism is more than that with the rule.