Nearsightedness: Undercorrection After Surgery-Topic Overview
Nearsightedness: Undercorrection After Surgery-Topic Overview
Undercorrection occurs when an eye remains somewhat nearsighted after refractive surgery. It is seldom considered a serious complication. Distance vision is better (if not perfect), and near vision is still good. Undercorrection is much more common in people with severe nearsightedness than in people who had nearsightedness of less than 3 diopters.
Slight undercorrection may be considered an advantage. A little mild nearsightedness will delay the onset of presbyopia. And it may offset the effect of progressive farsightedness (hyperopia). Also, the amount of undercorrection may decrease after several years because of a phenomenon called the hyperopic shift. Hyperopic shift is the gradual increase in farsightedness that may occur for some years after radial keratotomy (RK) surgery.
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.
Read the Cornea Transplant article > >
Undercorrection may be successfully corrected with a repeat surgery. But repeat operations tend to be less effective and less predictable than the first surgery.
Slight undercorrection may be considered an advantage. A little mild nearsightedness will delay the onset of presbyopia. And it may offset the effect of progressive farsightedness (hyperopia). Also, the amount of undercorrection may decrease after several years because of a phenomenon called the hyperopic shift. Hyperopic shift is the gradual increase in farsightedness that may occur for some years after radial keratotomy (RK) surgery.
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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.
Read the Cornea Transplant article > >
Undercorrection may be successfully corrected with a repeat surgery. But repeat operations tend to be less effective and less predictable than the first surgery.
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