| Normal eyes (n = 12) | PPG eyes (n = 10) | early UHFD eyes (n = 10) | severe UHFD eyes (n = 10) | p-value |
Age (year) | 64.8 ± 10.2 | 55.2 ± 9.6 | 61.8 ± 10.0 | 59.4 ± 9.0 | 0.1453 |
Gender (M / F) | 4/8 | 4/6 | 5/5 | 5/7 | 0.6330 |
IOP (mHg) | 15.8 ± 3.3 | 16.0 ± 6.5 | 14.3 ± 3.5 | 13.2 ± 2.0 | 0.1608 |
Equivalent refractive error (D) | −0.54 ± 1.48 | −2.24 ± 2.05 | −3.30 ± 3.34 | −2.38 ± 2.51 | 0.0696 |
MD value (dB) | 1.45 ± 0.85 | 0.63 ± 1.67 | −2.49 ± 0.80 | 8.50 ± 2.60 | <0.0001 |
PSD value (dB) | 1.68 ± 0.33 | 1.80 ± 0.30 | −7.14 ± 3.35 | 13.07 ± 3.56 | <0.0001 |