keratomileusis


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Related to keratomileusis: LASIK, keratophakia, epikeratoplasty

keratomileusis

 [ker″ah-to-mĭ-loo´sis]
keratoplasty in which a slice of the patient's cornea is removed, shaped to the desired curvature, and then sutured back on the remaining cornea to correct optical error.
laser-assisted in-situ keratomileusis (LASIK) keratoplasty in which the excimer laser and microkeratome are combined for vision correction; the microkeratome is used to shave a thin slice and create a hinged flap in the cornea, the flap is reflected back, the exposed cornea is reshaped by the laser, and the flap is replaced, without sutures, to heal back into position.

ker·a·to·mi·leu·sis

(ker'ă-tō-mī-lū'sis),
Surgical alteration of refractive error by changing the shape of a deep layer of the cornea: the anterior lamella is peeled back, frozen, and recarved on its back surface on a lathe; some of the corneal stroma can be removed from the bed with a laser or a knife.
[coinage, prob. fr. G. keras (kerat-), horn, cornea, + smileusis, carving]

keratomileusis

/ker·a·to·mi·leu·sis/ (ker″ah-to-mĭ-loo´sis) keratoplasty in which a slice of the patient's cornea is removed, shaped to the desired curvature, and then sutured back on the remaining cornea to correct optical error.
laser-assisted in-situ keratomileusis  (LASIK) keratoplasty in which the excimer laser and microkeratome are combined for vision correction; the microkeratome is used to shave a thin slice and create a hinged flap in the cornea, the exposed cornea is reshaped by the laser, and the flap is replaced, without sutures, to heal back into position.
Enlarge picture
Laser-assisted in-situ keratomileusis for treatment of myopia. (A), Creation of flap; (B), Laser ablation of the stromal bed, showing the area of tissue removal in blue; (C), flap replaced, with the central cornea flattened

keratomileusis

(kĕr′ə-tō-mə-lo͞o′sĭs)
n.
Eye surgery in which refractive disorders are corrected by reshaping an inner layer of the cornea, formerly performed by freezing corneal layers and forming them to a new curvature, but now usually performed using a laser.

ker·a·to·mi·leu·sis

(ker'ă-tō-mī-lū'sis)
Surgical alteration of refractive error by changing the shape of a deep layer of the cornea.
[coinage, prob. fr. G. keras (kerat-), horn, cornea, + smileusis, carving]

keratomileusis

A surgical procedure on the cornea aimed at correcting ametropia. An anterior layer of the cornea is sliced off with a microkeratome, frozen, ground to a new curvature and sutured back in the same location. There are many complications and technical difficulties associated with this procedure. Syn. refractive keratoplasty and keratorefractive surgery (both terms also include epikeratoplasty, keratophakia and radial keratotomy). See epikeratoplasty; Intacs; photorefractive keratectomy; keratome; keratophakia; LASEK; LASIK.
References in periodicals archive ?
Approved procedures include radial keratotomy (RK), photorefractive keratectomy (PRK), laser-assisted in-situ keratomileusis (LASIK) and more recently, intra-corneal rings.
True (A) or false (B)--click on the correct answer: Corneal flap traumatic dislocation following in situ keratomileusis is impossible because the flap is firmly sutured.
Laser-assisted in-situ keratomileusis (LASIK) has gained widespread popularity as a safe and effective surgical method for the correction of myopia, but patients with high [severe] myopia or thin corneas face some restrictions in avoiding the risk of developing keratectasia [a weakening of the cornea]," the authors write as background information in the study paper, published in the Archives of Ophthalmology, one of the JAMA/Archives journals.
This combines PRK with an older surgical procedure known as keratomileusis.
LASIK, or Laser In-Situ Keratomileusis - meaning to shape the cornea of the eye using a laser - is the most advanced procedures for correcting nearsighted, farsighted and astigmatic vision.
The MEL 80 Excimer Laser is indicated for use in primary Laser Assisted in situ Keratomileusis (LASIK) treatments for the reduction or elimination of naturally occurring hyperopia of less than or equal to +5.
Prevention of corneal ectasia in laser in situ keratomileusis.
LASIK, which is short for Laser In-situ Keratomileusis, uses a laser to reshape the cornea of the eye to reduce or eliminate the need for corrective lenses.
With LASIK, or laser in-situ keratomileusis, the doctor shaves a flap from the surface of the cornea, then uses the laser to sculpt the less-sensitive inner cells of the cornea.
The disagreements ring with fierce intensity, with specialists at places like Emory University arguing that LASIK - laser in-situ keratomileusis - is by far the preferred method.
Refractive Keratoplasty/Radial Keratotomy (RK); Photorefractive Keratectomy (PRK); Laser Thermal Keratoplasty (LTK); Laser assisted in situ keratomileusis (LASIK); Intrastromal corneal rings (ICR) (revised 12-01)
With almost two decades of innovation resulting in improved visual outcomes and one of the highest safety profiles of any elective procedure, Laser Assisted In-Situ Keratomileusis (LASIK) is the world's most-popular elective procedure available today.