Left sided lateral gaze is affected in lesion of -
Right frontal lobe
Right occipital lobe
Left occipital lobe
Left frontal lobe
Horizontal eye movements (Fast one or saccadic) are triggered by the centro lateral frontal lobes i.e. left lateral gaze palsy is caused by right frontal lobe Abducens nuclear lesions produces a complete lateral gaze palsy Ref
Ocular motility and squint