Table 1. Clinical characteristics of normal and glaucomatous patients.
| Items | OAG (n=55) | PPG (n=40) | Normal (n=40) | P |
| Age (y) | 68.5±7.5 | 65.4±6.1 | 67.8±6.5 | 0.53 |
| Gender (female) | 29 | 18 | 25 | 0.38 |
| AL (mm) | 23.6±2.8 | 24.2±2.1 | 23.8±1.9 | 0.61 |
| CCT (µm) | 542.7±29.5 | 553.3±32.9 | 549.5±30.4 | 0.49 |
| IOP (mm Hg) | 19.2±3.4 | 15.7±2.9 | 13.5±2.1 | 0.16 |
| Visual field MD (dB) | -5.4±2.1 | 0.17±0.94 | 0.01±0.43 | <0.05 |
| PSD (dB) | 7.4±3.7 | 1.8±0.6 | 0.9±0.5 | <0.05 |
| RNFLT (µm) | 80.6±15.4 | 94.8±14.5 | 113.4±9.6 | <0.05 |
| GCIPLT (µm) | 101.0±12.9 | 109.4±10.8 | 119.7±8.7 | <0.05 |
| PCT (µm) | 113.6±39.1 | 116.3±42.7 | 148.9±41.7 | <0.001 |
| MCT (µm) | 171.2±61.5 | 172.7±60.3 | 194.3±70.6 | <0.001 |
| Disc area (mm2) | 1.89±0.32 | 1.91±0.41 | 1.93±0.39 | 0.532 |
OAG: Open angle glaucoma; PPG: Preperimetric glaucoma; AL: Axial length; CCT: Central corneal thickness; IOP: Intraocular pressure; MD: Mean deviation; PSD: Pattern standard deviation; RNFLT: Retinal nerve fiber layer thickness; GCIPLT: Ganglion cell-inner plexiform layer thickness; PCT: Peripapillary choroidal thickness; MCT: Macular choroidal thickness.