本文通过对４０—９８岁，无角膜疾患，眼轴在２２．００—２４．５０ｍｍ间的正常中老年人１０４１眼角膜屈光度和角膜散光度的测量，研究中老年人正常角膜的屈光状态及其与年龄的关系。结果显示，在角膜屈光度与散光度上，女性高于男性，左右眼间无明显差别。随年龄增长，水平经线屈光度逐渐增大，垂直经线变化不明显，逆规散光发生率逐渐增大，平均散光度逐渐增大。并对老年人散光逆转的成因进行了探讨 In this paper, corneal refractive power and corneal astigmatism of 1041 eyes of 40-98 years old patients with no corneal disease and 22.00-24.50mm eyes were measured. Its relationship with age. The results showed that in corneal refractive power and astigmatism, women than men, no significant difference between left and right eyes. With age, the level of the meridian gradually increased, the vertical warp did not change significantly, the incidence of astigmatism astigmatism gradually increased, the average astigmatism gradually increased. The causes of the reversal of astigmatism in the elderly were discussed