Refractive Surgery: Laser Thermal Keratoplasty (LTK)
LTK (laser thermal keratoplasty) is a technique for reshaping corneal tissue to help you see better without glasses or corrective lenses. This procedure uses a holmium laser to gently heat certain areas of the cornea. It shrinks the outer portion of the cornea, making the central cornea steeper.
What to Expect During the Procedure
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Before treatment, you may be given medication to help you relax.
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Eyedrops numb your eyes. A device is used to keep your eyes open.
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Laser treatment lasts a few seconds for each eye.
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Your vision should start to improve right away. It may take 3–6 months for your vision to become stable.
Pros of LTK
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Very safe procedure with few complications
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No touch procedure (no cutting or removal of corneal tissue)
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No scarring in the central cornea
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Low risk of dry eyes
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Immediate vision improvement
Cons of LTK
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Vision improvement may wear off over time
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May take several months for vision to become stable
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Risk of undercorrection or overcorrection
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Risk of loss of best corrected vision
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Publication Source:
Stasi K, Azar DT, Koch DD, Ophthalmology, 2nd ed., Chapter 24 - Laser thermal eratoplasty and conductive keratoplasty, 2004, pp 204-209
Online Source:
Lewis C
http://www.fda.gov/fdac/features/2001/501_eyes.html
Online Medical Reviewer:
Hammersmith, Kristin, MD
Date Last Reviewed:
9/8/2004
Date Last Modified:
6/23/2003