Table 2.
Thicknesses (microns) and volumes (mm3) of the circumpapillary retinal nerve fiber layer, macular retinal nerve fiber layer, ganglion cell layer and inner plexiform layer in both study groups
| Layer measured | Control group N = 60 eyes Mean (SD) | PCG group N = 40 eyes Mean (SD) | P valuea |
|---|---|---|---|
| cpRNFL | |||
| Overall | 101.831 (9.89) | 74.32 (26.25) | <0.001 |
| Sup-temporal | 143.66 (18.79) | 94.55 (39.91) | <0.001 |
| Temporal | 72.94 (10.63) | 58.72 (10.63) | <0.001 |
| Inf- temporal | 143.59 (21.26) | 98.35 (46.51) | <0.001 |
| Inf-nasal | 118.96 (27.77) | 81.92 (35.75) | <0.001 |
| Nasal | 74.37 (14.49) | 58.97 (22.16) | <0.001 |
| Sup-nasal | 113.67 (24.85) | 80.72 (37.10) | <0.001 |
| mRNFL | |||
| Outer-superior | 36.81 (5.33) | 29.02 (10.73) | <0.001 |
| Inner-superior | 23.16 (3.17) | 22.65 (4.78) | 0.522 |
| Outer-temporal | 19.06 (4.49) | 17.80 (1.96) | 0.057 |
| Inner-temporal | 16.55 (1.26) | 17.07 (1.60) | 0.085 |
| Outer-inferior | 41.47 (15.57) | 32.19 (12.62) | 0.001 |
| Inner-inferior | 26.03 (13.25) | 22.36 (5.07) | 0.055 |
| Outer-nasal | 50.85 (9.90) | 42.51 (14.70) | 0.002 |
| Inner-nasal | 20.58 (2.74) | 20.53 (3.31) | 0.941 |
| Foveal | 12.13 (2.03) | 12.12 (2.94) | 0.980 |
| Volume | 0.92 (0.18) | 0.78 (0.22) | 0.004 |
| GCL | |||
| Outer-superior | 37.03 (3.58) | 29.12 (6.69) | <0.001 |
| Inner-superior | 53.90 (4.04) | 44.82 (12.63) | <0.001 |
| Outer-temporal | 37.66 (4.85) | 29.90 (8.46) | <0.001 |
| Inner-temporal | 47.93 (5.02) | 39.46 (13.27) | <0.001 |
| Outer- inferior | 36.20 (3.73) | 29.19 (6.46) | <0.001 |
| Inner-inferior | 53.10 (4.19) | 44.17 (13.37) | <0.001 |
| Outer-nasal | 39.43 (3.64) | 33.41 (7.19) | <0.001 |
| Inner-nasal | 53.41 (4.71) | 45.41 (12.78) | <0.001 |
| Foveal | 16.81 (6.18) | 17.48 (6.99) | 0.621 |
| Volume | 1.12 (0.09) | 0.93 (0.22) | <0.001 |
| IPL | |||
| Outer-superior | 29.75 (2.81) | 25.07 (4.21) | <0.001 |
| Inner-superior | 41.65 (2.89) | 36.53 (7.96) | <0.001 |
| Outer-temporal | 32.75 (2.93) | 28.67 (5.44) | <0.001 |
| Inner-temporal | 40.50 (3.45) | 36.90 (9.00) | 0.018 |
| Outer-inferior | 28.76 (3.19) | 24.85 (4.32) | <0.001 |
| Inner-inferior | 41.26 (2.98) | 36.63 (7.65) | 0.001 |
| Outer-nasal | 30.03 (3.23) | 27.14 (5.18) | 0.001 |
| Inner-nasal | 42.65 (3.36) | 38.22 (7.63) | 0.001 |
| Foveal | 21.20 (3.83) | 21.80 (20.67) | 0.495 |
| Volume | 0.91 (0.07) | 0.81 (0.14) | <0.001 |
a t-test