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

Children's Vision and the New Classroom Technology

Today's teachers make full use of computers, interactive whiteboards, digital devices, and even 3D technology to enhance the learning environment. Forty percent of teachers use computers for instruction, and at least one computer is in 97% of all American classrooms. That adds up to a lot of screen time for kids who also watch TV or play on the computer at home. But is it harmful to a child’s vision? Parents are worried. Nearly a third say they’re concerned that computers and handheld electronics...

Read the Children's Vision and the New Classroom Technology 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