keratoplasty


keratoplasty
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]
- autogenous k. corneal transplant with donor material from the same individual.
- epikeratophakic k. SYN: epikeratophakia.
- homogenous k. corneal transplant with donor material from another individual of the same species.
- 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.
- tectonic k. grafting to replace lost corneal tissue.
- total k. corneal transplant in which the entire cornea is removed and replaced.

* * *

ker·a·to·plas·ty 'ker-ət-ō-.plas-tē n, pl -ties plastic surgery on the cornea esp corneal grafting

* * *

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


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.