Figure 2

Scatterplots showing correlation between age and spectral-domain optical coherence tomography (SD-OCT) hemifield parameters. Entire study subjects showed a negative correlation between age and the thinner/thicker hemifield (HF) retinal nerve fiber layer (RNFL) and ganglion cell–inner plexiform layer (GCIPL) thickness ratios (r = − 0.252, P = 0.041, (A); r = − 0.317, P = 0.013, (D)). However, there was no age correlation seen in the thinner/thicker HF thickness ratio for RNFL and GCIPL parameters in the subgroup analyses for the PPG and control groups (all P > 0.05, (B, C, E, F)).