| 释义 |
astigmatism美 [ə'stɪɡmə.tɪzəm] 英 [ə'stɪɡmə.tɪz(ə)m] 1. | 散光a fault in the shape of a person's eye that prevents them from seeing clearly |
n. | 1. an unequal curving of one or more of the refractive surfaces of the eye, usually the cornea. 2. a defect in a lens or mirror that prevents light rays from meeting at a single point, producing an imperfect image 3. a condition in which someone’s eyes cannot focus correctly without the help of glasses |
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