Dehydration Injury to Retina after Macula-On Retinal Detachment Repair - Also Subretinal Perfluoron

18 month ago he had a scleral buckle, vitrectomy, laser and gas for macula on retinal detachment. Since he notices blind spots in the center of the left eye/ He also notices a dense, inferior visual field defect. OD 20/20, OS 20/50