astigmia
/æs'ti^miә/
📖 中文释义
- n. [医]散光
🔗 释义中的汉语词
📘 English Definition（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