KERATODERMATOCELE 



640 



KERAUNONEUROSIS 



Keratodermatocele (ker f -at-o-der-mat' -o-set) [nepaq, 

 horn; dep/xa, skin; nif/.Tj, tumor]. See Keratocele. 



Keratodermatomalacia (ker' ' -at-o-der-mat-o-nial-a' '-se- 

 ah) \_nepag, horn; dippa, skin; /j.a?MKta, softness]. 

 Softening of the cornea. 



Keratodermatosis (ker-at-o-der-mat-o f -sis) [/c i p a g, 

 horn ; 6ep/ua, skin ; voaog, disease]. A skin-affection 

 characterized by alteration in the horny elements of 

 the skin. 



Keratodermia (ker-at-o-der' -me-ah)\japag, horn; deppa, 

 skin]. See Keratodentia. K. erythematosa sym- 

 metrica, tylosis of the soles and palms, in which the 

 horny patches show a broken-up surface. 



Keratodermites (ker-at-o-der-mP -tez) [«ipac, horn ; 

 dip/ia, skin; trig, inflammation]. A group of in- 

 flammatory scaly skin-affections. 



Keratogenous (ker-at-of '-en-us) [nepag, horn ; yevvav, 

 to beget]. Pertaining to the formation of horny 

 growths. K. Membrane, that part of the skin or 

 layer of corium that develops into nails, claws, and 

 hoofs. 



Keratoglobus (ker-at-o-glo' -bus) [/cepac, cornea ; globus, 

 a ball]. Distention and protrusion of the cornea. 

 The sclerotic may also, become distended in severe 

 cases. When so extensive as to prevent closure of the 

 lids, it has been called buphthalmos. When the dis- 

 tention is transparent, regular, and cone-shaped, the 

 apex of the cone being the center of the cornea, it is 

 called keratoconus, or conical cornea. When the pro- 

 trusion is opaque, or connected with synechia of the 

 iris, it is called staphyloma of the cornea, or anterior 

 staphyloma. When due to increase in the fluids of the 

 eye, with increased tension and uniform ectasia, it is 

 called hydrophthalmos. Enlargement of the cornea 

 is also called megalo-cornea. 



Keratoglossus (ker' '-at-o-glos' '-us) \_nkpag, horn; yAucca, 

 tongue]. See Muscles, Table of. 



Keratohyalin (ker' -at-o-hP -al-in) {jitpag, horn ; va?j>g, 

 glass]. A peculiar substance occurring in granules in 

 the deeper layers of the skin. These granules are in- 

 soluble in ether, alcohol, and water, and are present 

 in the process of cornification of the rete cells. See 

 also Eleidia. 



Keratoid (ker' -at-oid) [nipag, horn ; eldog, like]. 

 Hornlike. 



Kerato-iritis (ker'-at-o-i-rp-tis) [/cepac, cornea; Ipig, 

 iris; tug, inflammation]. Combined inflammation of 

 the cornea and the iris. 



Keratoleukoma (ker-at-o-lu-ko' -mah ) [/cepac, horn ; 

 Aevnog, white: //. , Keratoleukomata~\. A leukoma 

 or whitish opacity of the cornea. 



Keratolysis (ker-at-oP -is-is) [/cepac, horn ; "kvaig, solu- 

 tion]. Deciduous skin ; a curious and rare condition 

 of the skin in which the latter, like the serpent's, is 

 cast off periodically, that of the limbs coming off like 

 a glove or a stocking. 



Keratolytic (ker-at-o-UP -ik ) \_nepag, horn ; Avaig, solu- 

 tion] . Pertaining to keratolysis. 



Keratoma (ker-at-o f -mah ) [/cipnc, horn ; bpa, tumor : 

 pi. , Keratomatd\. I. See Callositas. 2. Congenital 

 ichthyosis ; the presence, dating from fetal life, of 

 horny plates upon the integument. 



Keratomalacia (ker-at-o-mal-a' '-se-ah ) [nepag, cornea ; 

 /in'/ aula, softness]. A softening of the corneal 

 tissue. 



Keratome (ker'-at-om) [i<£pag, cornea; ropi], a cutting]. 

 A knife with a peculiar trowel-like blade, used for 

 making the incision into the cornea in the operation 

 of iridectomy. 



Keratometer (ker-at-onP-et-er) [xepag, cornea; ptrpov, 

 measure]. An instrument for measuring the curves 

 of the cornea. 



Keratomycosis (ker-at-o-mi-ko' '-sis) \_nspag, cornea; 

 fivicr/g, fungus]. A fungoid growth of the cornea, 

 or the diseased condition therewith associated. 

 K. aspergillina, a form characterized by the presence 

 of Aspergillus glaucus. 



Keratoncus (ker-at-ong' '-kus) [xepag, horn ; bynoq, a 

 tumor]. Any horny tumor. 



Keratonosis (ker-at-on' '-o-sis). See Keratosis. 



Keratonyxis (ker-at-o-niks' -is) \_ndpag, cornea ; vi^tc, 

 needling]. The needling of a soft cataract by punc- 

 ture through the cornea ; also, the old operation of 

 couching a cataract with the needle. 



Keratoplasia (ker-at-o-pla f -ze-ah) \_nipag, horn ; z'/nr,- 

 oeiv, to form]. The reparative renewal of the horny 

 layer of the skin. 



Keratoplastic (ker-at-o-plas' -tik) [(cepac, horn ; irAaan- 

 nog, formed]. Pertaining to keratoplasty. 



Keratoplasty (ker' '-at-o-plas-te) \_ntpag, cornea ; wAaa- 

 asiv, to form]. Plastic operation upon the cornea, 

 especially the transplantation of a button or excised 

 portion of cornea from the eye of a lower animal to that 

 of man. This is effected by means of a peculiar 

 trephine, with which the tissue to be transplanted is 

 removed from the animal's eye and the place for its 

 reception is made in the human eye. The operation 

 is sometimes called trephining the cornea. 



Keratorrhexis (ker-at-or-eks' -is) [/cfpac, horn ; pfy£«f, 

 rupture]. Rupture of the cornea, due to ulceration or 

 traumatism. 



Keratoscleritis [ker-al-o-skle-ri' '-tis) \_nepag, cornea ; 

 OKAqpSg, hard ; trig, inflammation]. Inflammation of 

 the cornea and the sclera. 



Keratoscope (ker' -at-o-skop) [aepag, cornea ; anorrelv, 

 to observe]. An instrument for examining the cornea, 

 and testing the symmetry of its meridians of curvature. 



Keratoscopy (ker-at-os' -ko-pe) \jdpag, cornea; OKO^tiv, 

 to observe]. Examination of the cornea. See Retin- 

 oscopy. 



Keratose (ke7- r -at-os) [/cfpac, horn]. Horny. 



Keratosis (ker-at-o' -sis) \_nkpag, horn; vooog, disease]. 

 Any one of a class of skin-diseases characterized by 

 thickened epidermis, and the presence of such callosities 

 as horns, warts, etc. See Callosity. K. follicularis. 

 See Darier's Disease. K. obturans, a condition of the 

 external auditory meatus due to desquamation ot the 

 epithelium, the mass being colored by cerumen and 

 containing cholesterin-crystals. K. pilaris, Lichen 

 pilaris; Lichen spinulosus ; Pityriasis pilaris ; a chronic 

 affection of the skin marked by a pin-head sized coni- 

 cal elevation investing the hair-follicle, and somewhat 

 resembling gooseflesh and ichthyosis. The skin be- 

 comes dry and hard, and feels like a nutmeg-grater. 

 The disease appears in workingmen who are uncleanly, 

 and in scrofulous children, and it occurs chiefly on the 

 thighs, arms, and forearms. K. senilis, a cornifica- 

 tion of the skin of old people, general or partial, cir- 

 cumscribed or diffuse, and often limited to certaii 

 nite regions, as the face and dorsal surfaces i 

 hands and feet. The lesions consist of light 01 

 yellowish, brownish, or blackish points, dry, scaling, 

 and horny, or scaling and greasy. These may 1 

 the seat of an epitheliomatous process. 



Keratotome (ker'-at-o-tom). See Keratome. 



Keratotomy (ker-at-of -o-me) [atpag, cornea ; r, 

 to cut]. Surgical incision of the cornea. 



Keraunographic {ker-aw-no-graf -ik) [icepawSg, light- 

 ning ; ypdcpeiv, to write]. Pertaining to the pictaa 

 impressions of near objects sometimes seen upon the 

 body of a person who has been struck by lightnii 



Keraunoneurosis (ker-aw-no-nu-ro' -sis) [«£/ 

 lightning; vevpov, nerve ; v6oog, disease]. Nervous 

 disease due to lightning-stroke. 



