refractive
11refractive index — n. INDEX OF REFRACTION …
12Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… …
13Refractive error — Refraction error Classification and external resources ICD 10 H52.0 H52.4 ICD 9 …
14refractive index — Optics. See index of refraction. [1830 40] * * * ▪ physics also called Index Of Refraction, measure of the bending of a ray of light when passing from one medium into another. If i is the angle of incidence of a ray in vacuum (angle… …
15Refractive index profile — A refractive index profile is the distribution of refractive indices of materials within an optical fiber. Some optical fiber has a step index profile, in which the core has one uniformly distributed index and the cladding has a lower uniformly… …
16refractive error — an abnormality of the eye resulting in a blurred image on the retina as a result of abnormal focusing, which can be corrected by glasses, contact lenses, or refractive surgery. Refractive errors include myopia, hypermetropia, and astigmatism …
17refractive error — an abnormality of the eye resulting in a blurred image on the retina as a result of abnormal focusing, which can be corrected by glasses, contact lenses, or refractive surgery. Refractive errors include myopia, hypermetropia, and astigmatism …
18Refractive index — Index In dex, n.; pl. E. {Indexes}, L. {Indices}(?). [L.: cf. F. index. See {Indicate}, {Diction}.] [1913 Webster] 1. That which points out; that which shows, indicates, manifests, or discloses; as, the increasing unemployment rate is an index of …
19refractive surgery — any surgical procedure that has as its primary objective the correction of any refractive error. It includes such procedures as clear lens extraction, LASIK, LASEK, photorefractive keratectomy, and thermokeratoplasty …
20refractive keratoplasty — keratoplasty in which a section of cornea is removed from the patient or a donor, shaped to the desired curvature, and inserted either between layers (keratophakia) or on the cornea (keratomileusis), changing its curvature and correcting optical… …
