Modeling a Telemedicine Screening Program for Diabetic Retinopathy in Iran and Implementing a Pilot Project in Tehran Suburb

Table 3

Classification of patients based on presenting visual acuity (PVA) and diabetic macular edema (DME).

Category	N (%)
1	403 (70.95)
2	112 (19.72)
3	37 (6.51)
4	16 (2.82)

N = number. 1 = PVA with pinhole >20/40 and no DME or mild DME; 2 = PVA with pinhole ≤20/40 and no DME or mild DME; 3 = PVA with pinhole >20/40 and moderate or severe DME; 4 = PVA with pinhole ≤20/40 and moderate or severe DME.