(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people
(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
双语例句
1. He suffers from astigmia illnesses.
他患有散光症。
youdao
2. He suffers from astigmia illnesses.
他患有散光症。
youdao
用作名词 (n.)
The past rectification operation aiming at myopia refraction patients has developed the rectification treatment aiming at hyperopia and astigmia patients. 过去仅针对近视屈光患者施行的矫正手术，目前已发展出可针对远视与散光患者施行的矫正治疗。
