Table 2

Annual rates of progression to high risk proliferative retinopathy by severity of non-proliferative retinopathy: review schedule giving 4% risk between appointments

Severity NPDR% PDR/yearReview
*In our institution, patients with mild NPDR and type 2 diabetes are discharged to annual community review. Patients with type 1 diabetes, who are monocular, or who have other specific risk factors are reviewed annually in the clinic.
Mild148 months*
Moderate412 months
Severe86 months
Very severe173 months