Amblyopia

[Rihanna]

Partial or complete loss of vision in one eye.
To force the use of the bad (or amblyopic) eye, it is sometimes patched for an indefinate amount of time.

[Luis Fok]

Amblyopia, a common cause of vision loss in children, is a decrease in vision that occurs because the brain ignores the image received from an eye. Vision loss may be permanent if the disorder is not diagnosed and treated before age 8.

Amblyopia can be caused by focusing problems (refractive errors), misalignment of the eyes (strabismus), glaucoma, cataracts, or other eye problems.
Children can have no symptoms, or symptoms that include squinting, covering one eye, or having one eye that does not look in the same direction as the other.
The diagnosis is based on the results of vision testing.
If diagnosed and treated early, amblyopia can be corrected.
Treatment includes eyeglasses or contact lenses, an eye patch, eye drops, or a combination.

Amblyopia affects about 2 to 3% of children and usually develops before age 2. However, any child under about age 8 can develop amblyopia.

[Dianne]

Impaired or dim vision without obvious defect or change in the eye.