- Any surgical modification of the cornea; the removal of a portion of the cornea containing an opacity and the insertion in its place of a piece of cornea of the same size and shape removed from elsewhere. SYN: corneal graft, corneal transplantation, corneal trepanation, trepanation of cornea, transplantation of cornea. [kerato- + G. plasso, to form]- epikeratophakic k. SYN: epikeratophakia.- keratophakic k. SYN: keratophakia.- lamellar k., layered k. SYN: nonpenetrating k..- nonpenetrating k. k. in which only the anterior layer of the cornea is used (not a tectonic k.). SYN: lamellar k., layered k..- optical k. transplantation of transparent corneal tissue to replace a leukoma or scar that impairs vision.- penetrating k. corneal transplant with replacement of all layers of the cornea, but retaining the peripheral cornea. SYN: perforating k..- perforating k. SYN: penetrating k..- refractive k. any procedure in which the shape of the cornea is modified, with the intent of changing the refractive error of the eye; for example, if the cornea is flattened, the eye becomes less myopic. See photorefractive keratectomy, keratophakia, lamellar k., thermokeratoplasty, keratomileusis, radial keratotomy. SYN: keratorefractive surgery.
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* * *n.an eye operation in which any diseased parts of the cornea are replaced by clear corneal tissue from a donor. All layers of the cornea may need to be replaced (penetrating keratoplasty) or only the superficial layers, the deeper layer remaining (lamellar keratoplasty). In the latter case the thickness of the replacement cornea is correspondingly reduced. Lamellar keratoplasty has the advantage over penetrating keratoplasty of not requiring the eye to be opened, and therefore the risk of infection is greatly reduced.
* * *ker·a·to·plas·ty (kerґə-to-plas″te) [kerato- + -plasty] plastic surgery of the cornea; called also corneal transplantation. keratoplastic adj
Medical dictionary. 2011.
Look at other dictionaries:
keratoplasty — [ker′ə tō plas΄tē] n. pl. keratoplasties [ KERATO + PLASTY] the surgical operation of grafting new corneal tissue onto an eye … English World dictionary
keratoplasty — corneal graft; n. an eye operation in which any diseased parts of the cornea are replaced by clear corneal tissue from a donor. All layers of the cornea may need to be replaced (penetrating keratoplasty) or only the superficial layers, the deeper … The new mediacal dictionary
keratoplasty — noun (plural ties) Date: circa 1857 plastic surgery on the cornea; especially corneal grafting … New Collegiate Dictionary
keratoplasty — keratoplastic, adj. /ker euh toh plas tee/, n., pl. keratoplasties. plastic surgery performed upon the cornea, esp. a corneal transplantation. [1855 60; KERATO + PLASTY] * * * … Universalium
keratoplasty — noun grafting or transplantation of the cornea … Wiktionary
keratoplasty — n. plastic surgery done on the cornea … English contemporary dictionary
keratoplasty — [ kɛrətə(ʊ)ˌplasti] noun Medicine surgery carried out on the cornea, especially corneal transplantation … English new terms dictionary
keratoplasty — ker·a·to·plas·ty … English syllables
keratoplasty — ker•a•to•plas•ty [[t]ˈkɛr ə toʊˌplæs ti[/t]] n. pl. ties srg plastic surgery performed upon the cornea, esp. a corneal transplantation • Etymology: 1855–60 ker a•to•plas′tic, adj … From formal English to slang
keratoplasty — noun a surgical procedure in which part or all of a damaged or diseased cornea is replaced by healthy corneal tissue from a donor • Syn: ↑corneal graft, ↑corneal transplant • Hypernyms: ↑plastic surgery, ↑reconstructive surgery, ↑anaplasty,… … Useful english dictionary