"Emmetropia" is a word in ENGLISH

Any abnormal condition of the refracting powers of the eye.

Produced by the refraction of light, as seen through water; as, anaclastic curves.

That part of optics which treats of the refraction of light; -- commonly called dioptrics.

An anomalous state of refraction caused by the absence of the crystalline lens, as after operations for cataract. The remedy …

The quantity on which another quantity in a table depends; as, the altitude is the argument of the refraction.

One of the seven colors into which the rays of light divide themselves, when refracted through a glass prism; the …

A diamond or other gem of the finest cut, formed into faces and facets, so as to reflect and refract …

Pertaining to, produced by, or involving, both the reflection and refraction of light; as, a catadioptric light.

Pertaining to, or possessing the properties of, a species of caustic curves formed by refraction. See Caustic surface, under Caustic.

That which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes …

A curved formed by the consecutive intersections of rays of light refracted through a lens.

Pertaining to the science or doctrine of refracted sounds.

The doctrine of refracted sound; diacoustics.

A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of …

Of or pertaining to dioptrics; assisting vision by means of the refraction of light; refractive; as, the dioptric system; a …

The science of the refraction of light; that part of geometrical optics which treats of the laws of the refraction …

One of a species of coccoliths, having an oval discoidal body, with a thick strongly refracting rim, and a thinner …

One of the dark particles forming the doubly refracting disks of muscle fibers.

Dimness or abolition of sight, with a diminution of transparency, a bluish or greenish tinge of the refracting media of …

A luminous circle, usually prismatically colored, round the sun or moon, and supposed to be caused by the refraction of …