<unk>  is a form of<unk> rabismus in which one or both eyes turns inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. It is the opposite of<unk>  and usually involves more severe axis deviation than esophoria.<unk>  is sometimes erroneously called "lazy eye", which describes the condition of amblyopia; a reduction in vision of one or both eyes that is not the result of any pathology of the eye and cannot be resolved by the use of corrective lenses. Amblyopia can, however, arise as a result of<unk>  occurring in childhood: In order to relieve symptoms of diplopia or double vision, the child's brain will ignore or "suppress" the image from the<unk>  eye, which when allowed to continue untreated will lead to the development of amblyopia. Treatment options for<unk>  include glasses to correct refractive errors (see accommodative<unk>  below), the use of prisms and/or orthoptic exercises and/or eye muscle surgery. The term is from Greek eso meaning "inward" and trope meaning "a turning".
Esotropia
Cyclotropia
Exotropia
Ocular dysmetria
Heterotopia 
Quadrantanopia
Presbyopia
Pseudomyopia