These disorders are caused by problems with the eye muscles used to focus.
What are eye movement disorders?
When you look at an object, you use several muscles to move both eyes to focus. If you have problems with the muscles controlling your eyes, you have difficulty focusing. There are many kinds of eye movement disorders that affect the muscles that control the eyes. Two common disorders are:
- Strabismus – a disorder in which the two eyes don't line up in the same direction with one eye turning inward or outward
- Nystagmus – fast, uncontrollable movements of the eyes