From Biology-Online Dictionary | Biology-Online Dictionary

Emmetropy --> emmetropia

(Science: ophthalmology) That refractive condition of the eye in which the rays of light are all brought accurately and without undue effort to a focus upon the retina; opposed to hypermetropia, myopia, an astigmatism.

Origin: NL, fr. Gr. In measure, proportioned, suitable (in _ measure) _, eye.