Refractive Errors

Friday, June 19, 2015

Refractive error means that the shape of your eye does not bend light correctly, resulting in a blurred image. Dr. Edward Hill tells us more about refractive errors in todays 60 Second Housecall.

Dr. Hill:

The cornea and lens of your eye helps you focus. Refractive errors are vision problems that happen when the shape of the eye keeps you from focusing well. The cause could be the length of the eyeball, changes in the shape of the cornea or aging of the lens.

Overuse of the eyes does not cause or worsen refractive error. Four common refractive errors are

Myopia, or nearsightednessclear vision close up but blurry in the distance

Hyperopia, or farsightednessclear vision in the distance but blurry close up

Presbyopiainability to focus close up as a result of aging, and

Astigmatismfocus problems caused by the cornea

The most common symptom is blurred vision. Other symptoms may include double vision, haziness, glare or halos around bright lights, squinting, headaches or eye strain.

A refractive error can be diagnosed by an eye care professional during an eye exam. Glasses or contact lenses can usually correct refractive errors. Laser eye surgery may also be a possibility.

For North Mississippi Medical Center, Im Dr. Edward Hill.