Baseline (± SEM) 18 months (± SEM) P Value
Rim Volume (mm3) 0.4 ± 0.035 0.3 ± 0.033 <0.05
Rim Area (mm2) 1.4 ± 0.03 1.28 ± 0.04 NS
Mean RNFL (mm) 0.250 ± 0.18 0.18 ± 0.027 <0.05
C/D ratio 0.52 ± 0.04 0.64 ± 0.04 NS
GPS 0.30 ± 0.05 0.46 ± 0.05 <0.05
Table 2: HRT characteristic.