FBS/PPBS, BP check , Lipid Profile , Serum Homocysteine , ESR, Carotid Doppler , 2D ECHO.
Physician opinion for cause of vasoocclusion 

In view of duration , ischemia is irreversible , hence intervention will not increase vision. Guarded prognosis explained. 
OPTION OF HBOT , LOW IOP VITRECTOMY DISCUSSED 
Monitor monthly x 3 months. to review early in case of emergency