Conductive keratoplasty
Conductive Keratoplasty
Conductive keratoplasty (pronounced: kənˈdʌktɪv ˌkɛrətəˈplæsti), often abbreviated as CK, is a type of refractive surgery used to correct mild to moderate hyperopia, or farsightedness, and presbyopia, the age-related loss of near vision. The procedure was approved by the FDA in the United States in 2002.
Etymology
The term "conductive keratoplasty" is derived from the words "conductive", referring to the use of radio frequency energy to reshape the cornea, and "keratoplasty", which comes from the Greek words "kerato", meaning cornea, and "plasty", meaning to mold or form.
Procedure
In conductive keratoplasty, a probe thinner than a strand of human hair applies a controlled amount of radio frequency energy to spots in the peripheral cornea. This shrinks the collagen in the cornea and steepens its curvature, allowing light entering the eye to be refocused on the retina and improving near vision.
Related Terms
- Refractive surgery: A type of eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses.
- Hyperopia: A common vision condition in which distant objects can be seen clearly, but close ones do not come into proper focus.
- Presbyopia: A condition associated with aging in which the eye exhibits a progressively diminished ability to focus on near objects.
- Cornea: The transparent front part of the eye that covers the iris, pupil, and anterior chamber.
- Collagen: The main structural protein in the extracellular space in the various connective tissues in the body.
- Retina: A thin layer of tissue that lines the back of the eye on the inside, located near the optic nerve.
External links
- Medical encyclopedia article on Conductive keratoplasty
- Wikipedia's article - Conductive keratoplasty
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