What is amblyopia?
Commonly known as “lazy eye”, it is a condition in which one or both eyes have reduced visual function, or even none at all.
What are the causes?
Amblyopia has a range of possible causes, including strabismus, congenital visual abnormalities, anisometropia (the condition in which each eye has a different visual defect, e.g. myopia in one eye and hyperopia in the other), or when there is a difference of more than 4 dioptres between the two eyes.
Patching, or covering the dominant eye with a patch, is one of the techniques used to improve the visual capacity of a child with amblyopia.
By stimulating the visual fixation and general activity of the lazy eye, this technique improves its acuity. The patch must be worn when the child is active to force the lazy eye to look at and fi x on objects as much as possible without the support of the stronger eye.