Emmetropia

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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.

For an example, read about emmetropia on pupilEyes.com

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