When is pituitary ablation indicated as a treatment for diabetic retinopathy?
D000783:Aneurysm / Q000628:therapy; D003930:Diabetic Retinopathy / Q000628:therapy*; D006801:Humans; D007016:Hypophysectomy; D008028:Light Coagulation; D012166:Retinal Hemorrhage / Q000628:therapy; D012173:Retinitis / Q000628:therapy