ametropia

n. defective refraction of light in the eye

A refractive error, or refraction error, is an error in the focusing of light by the eye and a frequent reason for reduced visual acuity.
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Ametropia /am·e·tro·pia/ a condition of the eye in which images fail to come to a proper focus on the retina, due to a discrepancy between the size [more]Ametropia - Community and Resources

Noun
1. (ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia
(hypernym) visual impairment, visual defect, vision defect, visual disorder
(hyponym) myopia, nearsightedness, shortsightedness
(classification) ophthalmology

n. ametropia, defective refraction of light in the eye