A condition in which simultaneous stimulation of points in the retina of each eye results in formation of a single visual sensation. These points, called corresponding points, lie in the foveae of the two retinas, or in the nasal half of one retina and the temporal half of the other. Abnormal correspondence results in double vision (diplopia) and usually is caused by imbalance of the ocular muscles.
A treatment for a retinal tear in which the retina and choroid surrounding the tear are frozen. This scars the retina around the tear, sealing the defect. Cryopexy is typically used to treat lesions at the retinal periphery, which may be difficult to treat with a laser.