Amblyopia or the layman’s term ‘lazy eyes’ refers to poor vision in an eye which is anatomically/structurally normal. By definition, the amblyopic eye should not be abnormal or diseased.

If the condition causing amblyopia is not corrected early enough, the brain may not be able to interpret the images from the amblyopic eye. Even if the condition is corrected later in life, the vision in that eye never improves as the visual pathways are permanently impaired.

There are a few types of amblyopia but the commonest type is due to a difference of refraction between the two eyes (anisometropic amblyopia). In this condition, the eye with worse vision or worse refraction usually develops amblyopia. Sometimes, both eyes may develop amblyopia if the refractive errors in both eyes are very high!

Early treatment tends to have better results and treatment after the age of 9-10 years often does not yield any improvement in the vision.