Figures 4: a-c Panoramic FFA of the left eye of Patient 13 with ocular hypertension in group II before (Figure 4a), at the diagnosis of NVG (Figure 4b), and after PRP (Figure 4c). A slight non-perfusion area (Figure 4a) was observed before the diagnosis of NVG, and IOP fluctuated between 21-23 mmHg. No angle NV or iris rubeosis was observed at this time. Nine months later, the non-perfusion area had increased (Figure 4b) and IOP had increased to 38 mmHg. Faint angle NV was observed by gonioscopy, but FGA clearly demonstrated angle NV (Figure 4b inset, arrows). IOP after PRP (Figure 4c) was 26-27mmHg, although the PRP density was 62.8% (Figure 4c inset).