Figure 3

Representative cases. (A) Normal control case of 48-year-old woman. (B) Preperimetric glaucoma (PPG) case of 51-year-old woman. (A) Stereoscopic disc photography (SDP) revealed no glaucomatous optic disc rim change in the normal eye of a 48-year-old female control, and optical coherence tomography (OCT) thickness maps revealed no ganglion cell inner plexiform layer (GCIPL) or retinal nerve fiber layer (RNFL) thinning with normal visual field. (B) SDP revealed optic disc rim loss in the superotemporal area, and OCT exhibited thinning in the superior region of the RNFL and GCIPL thickness maps with normal visual field test findings. The PPG case showed decreased PERG N95 amplitudes in the full field (FF), upper field (UF), and lower field (LF). The smaller/larger HF N95 amplitude ratio was 0.60 in the PPG case and was lower than the value for the normal control (0.96).