Children with nystagmus who have their the null point located at a position in which the eyes are positioned inward may develop an esotropia, a form of strabismus or eye turn.
They may have problems in coordinating the eyes in fixing and tracking objects (strabismus), which may lead to an appearance of having "crossed eyes" at times.
Most children with strabismus have comitant strabismus, which means that no matter where they look, the degree of deviation does not change.
With strabismus, in some cases the eye turn occurs always in the same eye; however, sometimes the turn alternates from one eye to the other.
Young children learn to ignore distorted messages from a misaligned eye, but adults with strabismus often develop double vision (diplopia).
Delay only increases the difficulty in correcting strabismus, so parents should not wait to see if their child outgrows the condition.
Sometimes strabismus does accompany other vision defects, so a complete eye examination by a pediatric ophthalmologist is advisable.
Doctors using it for strabismus and blepharospasm noticed that their patients had fewer wrinkles around the eyes after treatment.
Other strabismus conditions include hypertrophia, where the eyes turn upward, and hypotropia, where the eyes turn downward.
Strabismus affects 5 percent of people in the United States or more than 12 million individuals, most of them children.