Skip to content

Eye Health Center

Font Size

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, how long it may continue, or how significant it may become.

The effect of the hyperopic shift depends on the person's age and whether the person is nearsighted or farsighted after the surgery:

Recommended Related to Eye Health

Premature Babies and Eye Problems

Caring for a premature baby can be an exhilarating and frightening time for parents. Your newborn has survived despite being born before her time -- a huge relief. Yet you know that, because of her early birth, she has some challenges ahead. The number of preterm births in the U.S. rose by more than one-third from the 1980s to 2006. While recent rates have declined, this overall increase has health experts concerned. Premature babies have a higher risk for health problems, including certain eye...

Read the Premature Babies and Eye Problems article > >

  • People who are still slightly nearsighted after surgery (undercorrected) may find that their distance vision improves gradually as the hyperopic shift occurs.
  • People younger than 40 may not notice the hyperopic shift, because their eye can adjust to the change.
  • People around age 40 may develop presbyopia sooner as a result of the hyperopic shift and may need reading glasses.

    This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http:// cancer .gov or call 1-800-4-CANCER.

    WebMD Medical Reference from Healthwise

    Last Updated: June 11, 2013
    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.
    1
    Next Article:

    Nearsightedness: Hyperopic Shift After Surgery Topics

    Today on WebMD

    Woman holding tissue to reddened eye
    Learn about causes, symptoms, and treatments.
    eye
    Simple annoyance or the sign of a problem?
     
    red eyes
    Symptoms, triggers, and treatments.
    blue eye with contact lens
    Tips for wearing and caring.
     
    Understanding Stye
    Article
    human eye
    Article
     
    eye
    Video
    eye exam timing
    Video
     
    vision test
    Tool
    is vision correction surgery for you
    Article
     
    high tech contacts
    Article
    eye drop
    Article