Definition of "keratectomy" []

• Surgical removal of a part of the cornea. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The experimental procedure, called photo-refractive keratectomy (PRK) and performed only by ophthalmologists, uses a new "excimer" laser to treat moderate degrees of nearsightedness (myopia)."
• "Two types of laser surgery-photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) - are often used to correct refractive errors such as nearsightedness."
• "Photorefractive keratectomy (PRK) can be used on patients who have myopia, hyperopia, or an astigmatism."