Homonymous hemianopia with sparing of pupillary reflexes Is a feature of lesions of

Lesions of lateral geniculate body These produce homonymous hemianopia with sparing of pupillary reflexes, and may end in paial optic atrophy. Lesions of optic radiations Pupillary reactions are normal as the fibres of the light reflex leave the optic tracts to synapse in the superior colliculi. Lesions of optic radiations do not produce optic atrophy, as the second order neurons (optic nerve fibres) synapse in the lateral geniculate body. Common lesions of the optic radiations include vascular occlusions, primary and secondary tumours, and trauma. Lesions of the visual coex Congruous homonymous hemianopia usually sparing the macula, is a feature of occlusion of posterior cerebral aery supplying the anterior pa of occipital coex. Congruous homonymous macular defect occurs in lesions of the tip of the occipital coex following head injury or gun shot injuries. Pupillary light reflexes are normal and optic atrophy does not occur following visual coex lesions. Ref:- A K KHURANA; pg num:-290,291