Overview
Squint, also known as strabismus, is a condition in which both the eyes are unable to focus on the same direction at the same time. In such instances, while one eye may be able to focus on an object being observed, the second eye may turn inwards, outwards, upwards, or downwards at the same time.
Usually, this happens when the extra ocular muscles, which control the movement of the eyes and eyelids, are unable to function in tandem. As a result, neither eye can focus on the same point at the same time. This deformity can also occur if the eyes cannot coordinate properly due to a complication within the nervous system. Strabismus disrupts binocular vision which hampers the patient’s depth perception.
In India, the general incidence rate of strabismus, or squint eye, is between 4% and 6%. Premature new-borns, on the other hand, have a incidence rate of 30% to 40%.