strabismus
nounA visual defect in which one eye cannot focus with the other on an object because of imbalance of the eye muscles.
nounSquint; a failure of one of the visual axes to pass through the fixation-point (the point which is looked at).
nounAn affection of one or both eyes, in which the optic axes can not be directed to the same object, — a defect due either to undue contraction or to undue relaxation of one or more of the muscles which move the eyeball; squinting; cross-eye.
nounA
abnormal alignment of one or both eyes