Strabismus
Strabismus (squint) is caused by the misalignment of the two eyes. When one eye fixates on a target and the other eye turns inward, it is called esotropia / convergent squint. On the other hand, when the eye turns outward, it is called exotropia / divergent squint. The condition is often associated with refractive errors, congenital eye disease or imbalance of the extra-ocular muscles. Depending on the cause and severity, squint can be treated with spectacles, visual exercise or surgery.