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    Nearsightedness: Overcorrection After Surgery - Topic Overview

    Overcorrection makes an eye that was nearsighted before surgery farsighted (hyperopia) after surgery. Overcorrection speeds up the start of presbyopia. Most people who have overcorrection will need reading glasses around age 40. Improvements in surgical techniques are reducing the risk of overcorrection.

    Surgery to correct overcorrection is possible. But it is hard to predict how well it will work.

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    Cornea Transplant

    During a cornea transplant, an eye surgeon removes a portion of your cornea and replaces it with a new section of cornea from a donor. The procedure is also called a corneal transplant or a keratoplasty. About 40,000 cornea transplants are performed in the U.S. every year. You may need a cornea transplant if your cornea no longer lets light enter your eye properly because of scarring or disease.

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    With radial keratotomy (RK) surgery, the number of people who are overcorrected or farsighted seems to increase as more time (years) passes after the procedure. These changes over time are believed to be caused by the hyperopic shift. The hyperopic shift is less common in people who have had laser surgery.

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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