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Definisi 'astigmatism'
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English to English noun
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(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people |  | source: wordnet30
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(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point | | source: wordnet30
| 3 |
A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistinctness of vision. | | source: webster1913
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