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.

Three years later, when the child had learnt to read, emmetropia and full visual acuteness was observed in the right eye, with the left No. 4·0 only is read with difficulty.

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

It may, therefore, be useful for our purpose to cite a few cases of periodic convergent strabismus with emmetropia.

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

Determination of refraction of the better eye is given in 6 cases, and showed twice emmetropia, twice slight myopia, twice hypermetropia.

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.