Left sided lateral gaze is affected in lesion of-

Voluntary horizontal gaze in one direction begins with the contralateral frontal eye field. If horizontal gaze is affected, the damage may be:- Cortical center: - Contralateral frontal eye field. Brainstem center: - Pons (Pontine paramedian reticular) formation. Cranial nerve nucleus: - Abducens (6th nerve) nucleus.