For visually impaired diabetics.
D003922:Diabetes Mellitus, Type 1 / Q000150:complications / Q000188:drug therapy*; D003930:Diabetic Retinopathy / Q000150:complications; D006801:Humans; D007328:Insulin / Q000008:administration & dosage*; D012646:Self Administration; D014786:Vision Disorders / Q000209:etiology*
D007328:Insulin