em·me·tro·pi·a 
(ĕm′ĭ-trōpē-ə)
(ĕm′ĭ-trōpē-ə)n.
The condition of the normal eye when parallel rays of light are focused exactly on the retina and vision is perfect.
[Greek emmetros, well-proportioned, fitting (en, in; see EN-2 + metron, measure; see METER2) + -OPIA.]
em′me·tropic (-trŏpĭk, -trōpĭk) adj.
emmetropia