| keratosis pilaris atrophicans faciei | Erythema and horny plugs of outer portions of the eyebrows with destruction of follicles; onset in early infancy. (05 Mar 2000) |
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| keratosis punctata | Horny papules over the palms, soles, and digits that develop central plugs; seen commonly in blacks. Synonym: keratoma disseminatum, keratosis punctata. (05 Mar 2000) |
| keratosis rubra figurata | A dermatosis characterised by hyperkeratotic plaques of bizarre, geographic configuration, associated with erythrodermic areas that may vary remarkably in size, shape, and position from day to day; onset is usually in the first year of life; autosomal dominant inheritance. Synonym: keratosis rubra figurata. (05 Mar 2000) |
| keratosis vegetans | A slowly progressive autosomal dominant disorder of keratinization characterised by pinkish-to-tan papules that coalesce to form plaques. These lesions become darker over time and commonly fuse, forming papillomatous and warty malodorous growths. (12 Dec 1998) |
| keratosis, seborrheic | Benign eccrine poromas that present as multiple oval, brown-to-black plaques, located mostly on the chest and back. The age of onset is usually in the fourth or fifth decade. (12 Dec 1998) |
| keratosulfate | <chemical> A sulfated mucopolysaccharide initially isolated from bovine cornea. at least two types are known. Type I, found mostly in the cornea, contains d-galactose and d-glucosamine-6-o-sulfate as the repeating unit; type II, found in skeletal tissues, contains d-galactose and d-galactosamine-6-o-sulfate as the repeating unit. Chemical name: Keratosulfate (12 Dec 1998) |
| keratotome | <surgery> An instrument for dividing the cornea in operations for cataract. Origin: Gr. Horn + to cut. Source: Websters Dictionary (01 Mar 1998) |
| keratotomy | A surgical incision (cut) of the cornea. A radial keratotomy is a surgical procedure designed to flatten the cornea and thereby correct myopia (nearsightedness). It is called a radial keratotomy because the incisions resemble the spokes in a bicycle wheel. (12 Dec 1998) |
| keratotomy, radial | A procedure to treat myopia by cutting radial slits into the cornea to flatten it and thereby change its refractive properties. (12 Dec 1998) |