Strabismus and lazy eye
All of the muscles in each eye must be coordinated by the brain for binocular vision to function
Strabismus
Strabismus is a visible misalignment of the eyes, with one eye turning in, out, up, down or at an oblique angle. Strabismus misalignment of the eyes can occur in some or all directions of gaze and can result in diplopia (double vision) or amylopia (lazy eye).