Diagnosis Number of eyes (%)
1. Vitreous hemorrhage 41 (38.7%)
2. Tractional retinal detachment (TRD)  
(i) Involving macula 30 (28.3%)
 (ii) Threatening macula 5 (4.7%)
 (iii) With vitreous hemorrhage 11 (10.4%)
(iv) Combined TRD with rhegmatogenous retinal detachment 10 (9.4%)
3. Progressive Fibrous Proliferation 1 (0.9%)
4. Vitreomacular traction 6 (5.7%)
5. Persistent clinically significant macular edema with epiretinal membrane 2 (1.9%)
Table 1: The indications for pars plana vitrectomy (PPV) for persons with proliferative diabetic retinopathy (PDR).