The present invention is a system capable of increasing retinal and neural glucose oxidation by enhancing pyruvate dehydrogenase activity and therefore treats retinopathy and central nervous system disorders in both diabetic and non-diabetic patients. The current invention is a system of the treating of eye and nerve diseases using insulin pulses to a patient utilizing Chronic Intermittent Intravenous Insulin Therapy to achieve an increase in retinal and neural glucose oxidation by enhancing pryuvate dehydrogenase activity, therefore treating retinopathy and central nervous system disorders in both diabetic and non-diabetic patients.