Table 1: Classification and treatment of diabetic retinopathy

    Rate of progression
to PDR in 1 year9		 Treatment9
Non-proliferative (NPDR)
   
  Mild 4% Observe
  Moderate 12 - 27% Observe
  Severe 52% Consider laser
  Very severe 75% Consider laser
Proliferative (PDR)
 
Laser or surgery
Diabetic macular oedema
 
Macular laser