Misalignment of both eyes is called strabismus or squint. There is loss of coordinated movements of both eyes either due to ocular muscle imbalance or their nervous control.
It is usually present in childhood but may develop in adults as well. The squint may be constant or intermittent. Some children may close one eye in bright sun light or acquire abnormal head posture. Vision in both eyes may be normal or may be less in squinting eye due to amblyopia (lazy eye).There is loss of binocular vision and stereopsis (depth perception).
Aims at restoring good vision in each eye, alignment of both eyes and binocular single vision. It may be in the form of