柯林斯词典astigmatism /əˈstɪɡməˌtɪzəm/ 1. N-UNCOUNT If someone has astigmatism, the front of their eye has a slightly irregular shape, so they cannot see properly. 散光 返回 astigmatism剑桥词典a fault in the lens of the eye that reduces the quality of sight , especially a fault that stops the eye from focusing （尤指妨碍眼睛调焦的）散光，散视 返回 astigmatism