Why Does Only One Eye Cross?

Stroke (the leading cause of strabismus in adults) Head injuries, which can damage the area of the brain responsible for control of eye movement, the nerves that control eye movement, and the eye muscles. Neurological (nervous system) problems. Graves' disease (overproduction of thyroid hormone)

Is crossing one eye rare?

1 “Eso” means to turn inward toward the nose. An esotropia can occur in just one eye or alternate between both eyes. It is rare for both eyes to cross in at the same time.

Why do I only read with one eye?

This coordinated movement is called convergence. It helps you do close work like reading or using a phone. Convergence insufficiency is a problem with this movement. The condition causes one or both eyes to drift outward when you look at something close by.