Functional improvements and further benefits: For a long time it was thought that adult patients with long-standing strabismus could achieve only cosmetic improvement; in recent years there have been cases in which sensory fusion has occurred also in this type of patients provided that postoperative motor alignment is very high.[15] In case of pre-operative inward squint the correction expands the binocular visual field of the patient, improving peripheral vision. Furthermore, the restoration of ocular alignment can bring about psychosocial and economic benefits to the patient (see also: Psychosocial effects of strabismus).[15]