Amblyopia

(Lazy Eye)

Definition

Amblyopia, often called lazy eye, is a condition that occurs when there is a reduction of vision in one eye that is not correctable with glasses.There are two common types of amblyopia:
  • Anisometropic amblyopia—Vision in one eye differs from the other. This is often caused by a large difference in eyeglass prescription. The difference may be caused by one eye being more nearsighted or farsighted than the other, or by large differences in astigmatism .
  • Strabismic amblyopia— Visible misalignment (crossing) of one eye.
Strabismic Amblyopia
si55551198 96472 1
Copyright © Nucleus Medical Media, Inc.
The sooner amblyopia is treated, the more favorable the outcome.

Causes

Amblyopia is caused when the brain prefers (favors) one eye to the other. The brain’s preference (liking) for one eye over the other can weaken and reduce vision in the eye that is less used.There are no apparent genetic or environmental factors that can be attributed to causing amblyopia.

Risk Factors

Amblyopia is more common in children under 10 years old with:
  • Crossed eyes
  • A large difference in sight between the two eyes that may be:
    • Unnoticed
    • Detected by a large difference in eyeglass prescription
  • Visual blockage such as a cataract, droopy eyelid, or corneal scarring
Amblyopia can also occur in adults.

Symptoms

Some people with amblyopia may not have symptoms. In those that have them, amblyopia may cause:
  • A droopy (the inability to fully-open) eyelid that blocks the pupil
  • Headaches
  • Blurry vision
  • Excessive squinting or closing of the eyes
  • Repeatedly closing of one eye in bright sunlight
  • Crossing of one eye, generally the eye that is less used will excessively turn toward the nose
Symptoms vary depending on the extent of the amblyopia.

leave comments
0
Did you like this? Share with your family and friends.
Related Topics:
Current Research From Top Journals


Chewing Gum After Surgery May Improve Digestive Tract Recovery
April 2015

A systematic review found that participants given chewing gum after abdominal surgery may have a faster return to normal for their digestive system. Unfortunately, the quality of trials is low and more research will need to be done before this simple solution is confirmed.

dot separator
previous editions

Early Peanut Consumption Associated with Lower Risk of Peanut Allergy in High Risk Children
March 2015

Breastfeeding May Decrease the Risk of Childhood Obesity
February 2015

Tonsillectomy May Reduce Number of Sore Throat Days in Children
February 2015

dashed separator

Advertisement

Our Free Newsletter
click here to see all of our uplifting newsletters »

 

Advertisement

Advertisement

DiggDeliciousNewsvineRedditStumbleTechnoratiFacebook