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Radial keratotomy (RK) is a refractive surgical procedure to correct myopia (nearsightedness). It was developed in 1974 by Svyatoslav Fyodorov , a Russian ophthalmologist . It has been largely supplanted by newer, more accurate operations, such as photorefractive keratectomy , LASIK , Epi-LASIK and the phakic intraocular lens .
LASEK and PRK permanently change the shape of the anterior central cornea using an excimer laser to ablate (remove by vaporization) a small amount of tissue from the corneal stroma at the front of the eye, just under the corneal epithelium. The outer layer of the cornea is removed prior to the ablation.
Astigmatic keratotomy, arcuate keratotomy, or transverse keratotomy [clarification needed] Radial keratotomy; Hexagonal keratotomy [clarification needed] Epikeratophakia is the removal of the corneal epithelium and replacement with a lathe-cut corneal button. [15] Intracorneal rings or corneal ring segments [clarification needed] Implantable ...
Radial keratotomy (RK), developed by Russian ophthalmologist Svyatoslav Fyodorov in 1974, uses spoke-shaped incisions, always [clarification needed] made with a diamond knife, to alter the shape of the cornea and reduce myopia or astigmatism; this technique is, in medium to high diopters, usually replaced by other refractive methods.
Phototherapeutic keratectomy (PTK) is a type of eye surgery that uses a laser to treat various ocular disorders by removing tissue from the cornea.PTK allows the removal of superficial corneal opacities and surface irregularities.
Conductive keratoplasty (CK) is a type of refractive surgery that uses radio waves to adjust the contour of the cornea by shrinking the corneal collagen around it. [1] It is used to treat mild to moderate hyperopia.
used to perform microincisions on the cornea in the Radial keratotomy and Mini Asymmetric Radial Keratotomy (M.A.R.K.) •Epilation forceps (Cilia forceps) stout flat-ended blunt forceps with a thickened end to remove eyelashes •Entropion forceps
Steps to reattach the retina may include vitrectomy to clear the inner jelly, scleral buckling to create a support for the reattached retina, membranectomy to remove scar tissue, injection of dense liquids to smooth the retina into place, photocoagulation to bond the retina back against the wall of the eye, and injection of a gas or silicone ...
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