astigmatism
pronunciation
How to pronounce astigmatism in British English: UK [əˈstɪgmətɪzəm]
How to pronounce astigmatism in American English: US [əˈstɪɡməˌtɪzəm]
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- Noun:
- (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea
- (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point