emmetropia

American  

[em-i-troh-pee-uh] / ˌɛm ɪˈtroʊ pi ə /

noun

Ophthalmology.

1. the normal refractive condition of the eye, in which the rays of light are accurately focused on the retina.

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emmetropia British  

/ ˌɛmɪˈtrɒpɪk, ˌɛmɪˈtrəʊpɪə /

noun

1. the normal condition of perfect vision, in which parallel light rays are focused on the retina without the need for accommodation

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Other Word Forms

• emmetrope noun
• emmetropic adjective

Etymology

Origin of emmetropia

1860–65; < New Latin, equivalent to emmetr- (stem of Greek émmetros in measure, equivalent to em- em- ² + métr ( on ) measure + -os adj. suffix) + -opia -opia

Example Sentences

Full visual acuity on both sides—in the first examination slight myopia - ·75 D. is specified, afterwards emmetropia.

From Schweigger on Squint A Monograph by Dr. C. Schweigger by Schweigger, C.

Those cases deserve particular mention, in which it remained doubtful whether hypermetropia of slight degree or emmetropia was present.

From Schweigger on Squint A Monograph by Dr. C. Schweigger by Schweigger, C.

The attempt has really been made to attribute the commencement of convergent strabismus to the accommodation even in emmetropia, and offers fresh proof how easily facts are overwhelmed by theories.

From Schweigger on Squint A Monograph by Dr. C. Schweigger by Schweigger, C.

Among them 3 with double hypermetropia, 2 with emmetropia in one, and hypermetropia in the other eye.

From Schweigger on Squint A Monograph by Dr. C. Schweigger by Schweigger, C.

In proportion as myopia is gradually developed in originally existing emmetropia, myopes learn to converge to the neighbourhood of their far point without allowing their accommodation to come into action.

From Schweigger on Squint A Monograph by Dr. C. Schweigger by Schweigger, C.