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modification of corneal curvature by means of corneal incisions to minimize hyperopia, myopia, or astigmatism.
Surgical modification of corneal curvature by incising the cornea to minimize hyperopia, myopia, or astigmatism.
refractive keratotomy (RK)
a surgical procedure in which a varying number of radial or perpendicular incisions are made to flatten the cornea, resulting in the elimination or reduction of myopia or astigmatism. Incisions are made partially through the cornea sparing the central cornea. This type of refractive surgery has been largely replaced by newer methods. See also radial keratotomy.
re·frac·tive ker·a·tot·o·my(rē-frak'tiv ker'ă-tot'ŏ-mē)
Modification of corneal curvature by means of corneal incisions to minimize hyperopia, myopia, or astigmatism. In this type of radial keratotomy surgery, performed by excimer laser, wedge-shaped pieces of cornea are removed under local anesthetic. The resulting scar tissue formation reshapes the cornea.