My Sanford Chart allows you secure online access to your personal health information and your child's health information. It's available anywhere you have internet access. There is no cost to you and registering is quick and simple.
Refractive error is a condition that causes blurred vision when light rays entering the eye meet in front of or behind the retina rather than directly on it.
Normally, light rays are bent (refracted) by the cornea and lens and focus directly on the retina, the nerve layer at the back of the eye, which results in clear vision.
In most cases, refractive errors represent a natural variation from normal vision and are not considered a disease. Nearsightedness, farsightedness, astigmatism, and presbyopia are common refractive errors.
Vision usually can be corrected with glasses or contact lenses or, in some cases, surgery.
Last Revised: October 16, 2012
Author: Healthwise Staff
Medical Review: Adam Husney, MD - Family Medicine & Christopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology
To learn more visit Healthwise.org
© 1995-2013 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
There are no tweets at this time, please check back later.