Naso-temporal asymmetry of binocular inhibition

Binocular rivalry in the periphery of the visual field shows a distinct naso-temporal asymmetry that closely resembles the naso-temporal asymmetry of retinocortical projections. In convergent squint, the fovea of the deviating eye has to compete with the strong temporal hemifield of the contralateral eye. In divergent squint, the fovea competes with the much weaker nasal hemifield. Convergent squinters become amblyopic, but divergent ones seldom do.