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emmetropia

资料来源 : pyDict

正常眼

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Emmetropia \Em`me*tro"pi*a\, n. [NL., fr. Gr. ? in measure,
   proportioned, suitable (? in + ? measure) + ?, ?, eye.]
   (Med.)
   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.

资料来源 : WordNet®

emmetropia
     n : (ophthalmology) the normal refractive condition of the eye
         in which there is clear focus of light on the retina
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