astigmia
æs'ti^miә
基本解释
n. [医]散光
英文释义
n (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people
n (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
上一个单词：astigmatoscopy
下一个单词：astigmic