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Eye Health Center

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Nearsightedness: Hyperopic Shift After Surgery - Topic Overview

Most people who have radial keratotomy (RK) surgery gradually become more farsighted for at least 8 to 10 years after surgery. This is called the hyperopic shift. It is not clear what causes the shift. It's also not clear how long it may last or how bad it will get.

The effects depend on the person's age and whether the person is nearsighted or farsighted after the surgery.

Recommended Related to Eye Health

Adult Eye Exams

It's important for adults 40 and older to have eye exams every 1 to 2 years to check for problems. Regular eye exams are critical for finding: Glaucoma Age-related macular degeneration (AMD) Cataracts Diabetic retinopathy This is particularly important if you have risk factors or a family history of eye problems. For adults younger than 40 without any problems, the recommendations vary from routine tests every 2 years to no tests. If you have a health...

Read the Adult Eye Exams article > >

  • People who are still slightly nearsighted after surgery (undercorrected) may find that their distance vision slowly improves as the hyperopic shift occurs.
  • People younger than 40 may not notice the shift. That's because their eyes can adjust to the change.
  • People around age 40 may get presbyopia sooner as a result of the hyperopic shift. They may need reading glasses.

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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