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Overcorrection (Hyperopia)

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.

Recommended Related to Eye Health

Detecting Eye Diseases and Conditions

As our population ages, vision loss from eye diseases is increasing.  According to the National Eye Institute (NEI): About 3.3 million Americans aged 40 or older are blind or have low vision. This is about 1 in every 28 people. By 2020, that number could be 5.5 million -- a 60% increase. NEI has identified the most common eye diseases in people over age 40 as: Age-related macular degeneration Cataracts Diabetic eye disease Glaucoma To catch eye conditions early and help...

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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.

By Healthwise Staff
Primary Medical Reviewer Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer Christopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology
Last Revised June 24, 2011

WebMD Medical Reference from Healthwise

Last Updated: June 24, 2011
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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