柯林斯詞典astigmatism /??st?ɡm(xù)??t?z?m/ 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劍橋詞典a fault in the lens of the eye that reduces the quality of sight , especially a fault that stops the eye from focusing （尤指妨礙眼睛調(diào)焦的）散光，散視 返回 astigmatism