AMETROPIA

[am.e.tro.pia] n [NL, fr. Gk ametros without measure (fr. a- + metron measure) + NL -opia--more at measure] (1875): an abnormal refractive condition (as myopia, hyperopia, or astigmatism) of the eye in which images fail to focus upon the retina -- am.e.tro.pic adj