Talk to General Physician on Left Internal Carotid Artery Occlusion

i want to know that my father had recently about 2 to 3 months ago got stroke and large infarct in occipital lobe and temporal lobe also now he can't remember even names of family members even their own name he forget what to do in this condition also right side leg plus arm weakness need suggestions I'm very much depressed about my father kindly suggest me very good prescription thx allot.. ????