Reference meaning
astigmatism
Last updated
(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people
Related source terms
astigmia
Other meanings
2. noun
(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 14553590-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.