(n.) 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.
Thesaurus Entries
Christmas disease, Hartnup disease, Werdnig-Hoffmann disease, achroma, achromasia, achromatic vision, achromatosis, albescence, albino, albinoism, astigmatism, astigmia, bad eyesight, blindness, blondness, blurred vision, canescence, chalkiness, color blindness, creaminess, cystic fibrosis, defect of vision, dichromatic vision, double sight, double vision, dysautonomia, fairness, faulty eyesight, frostiness, glaucescence, glaucousness, grizzliness, hemophilia, hoariness, ichthyosis, imperfect vision, lactescence, leukoderma, lightness, milkiness, mongolianism, mongolism, mucoviscidosis, muscular dystrophy, nystagmus, paleness, pancreatic fibrosis, partial blindness, pearliness, reduced sight, sickle-cell anemia, silver, silveriness, snowiness, thalassemia, tunnel vision, vitiligo, white, white race, whiteness, whitishness
