Strabismus typically results from abnormal control of eye movement or a problem with eye muscles themselves. There are six eye muscles in each eye that control eye movement. One muscle moves the eye to the right, another to the left. The other four muscles move it up or down or at an angle. For proper focus, the muscles need to be able to work together or in a coordinated fashion to focus both eyes on an object. Inability to control these muscles properly may be related to a problem with the brain or a defect in the muscles.
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