Strabismus (English pronunciation: /strəˈbɪzməs/; Modern Latin, from Greek στραβισμός strabismos; cf. στραβίζειν strabizein "to squint", στραβός strabos "squinting, squint-eyed") is a condition in which the eyes are not properly aligned with each other. It typically involves a lack of coordination between the extraocular muscles, which prevents bringing the gaze of each eye to the same point in space and preventing proper binocular vision, which may adversely affect depth perception.