the condition of normal refraction of light in the eye, in which vision is perfect
Origin of emmetropiaModern Latin from Classical Greek emmetros, in measure, fit from en-, in + metron, measure + -opia
The condition of the normal eye when parallel rays of light are focused exactly on the retina and vision is perfect.
Origin of emmetropiaGreek emmetros well-proportioned, fitting ( en in ; see en- 2. ) ( metron measure ; see meter 2. ) -opia