Ametropia

Any error ofrefraction, such as hyperopia, myopia, or astigmatism. Axial Ametropia. Ametropia that is caused by the length of the eyeball on the opticaxis. The opposite of Emmetropia.

Source: Ophthalmic Dictionary including pronunciation, derivation and definition of the words used in Optometry and Ophthalmology by James J. Lewis, Oph. D. Professor of Optometry in the Northern Illinois College of Ophthalmology and Otology, Chicago.