Table 2. Assessment of inner and outer retinal layer metrics on the cirrus HD-OCT platform in normal eyes, metrics in entire cohort and sex breakdown.
| Total (N = 167) Average (standard deviation, range) |
Males (N = 66) Average (standard deviation, range) |
Females (N = 101) Average (standard deviation, range) |
P values | ||
|---|---|---|---|---|---|
| Total Retina (ILM-RPE) (mean, standard deviation, range, um) | Central thickness | 200.58 (19.22, 158.4 to 264) | 204.06 (20.40, 164.2 to 264) | 198.30 (17.78, 158.4 to 263.9) | 0.07 |
| Juxtafoveal nasal thickness |
327.14 (19.04, 267.8 to 397.1) | 329.71(19.03, 285.4 to 365.7) | 325.45 (18.95, 267.8 to 397.1) | 0.156 | |
| Juxtafoveal temporal thickness | 307.73 (17.85, 250.9 to 353.9) | 312.53 (16.55, 275.7 to 353.9) | 304.59 (18.16, 250.9 to 346.1) | 0.004 | |
| Inner Retina (ILM-OPL) (mean, standard deviation, range, um) | Central thickness | 21.47 (13.60, 0 to 78.2) | 23.52 (14.80, 0 to 78.2) | 20.13 (12.67, 0.9 to 66.5) | 0.12 |
| Juxtafoveal nasal thickness |
201.56 (23.74, 138.8 to 287.7) | 203.40 (22.09, 158.4 to 260) | 200.36 (24.79, 138.8 to 287.7) | 0.40 | |
| Juxtafoveal temporal thickness | 174.60 (18.81, 103.6 to 234.6) | 179.62 (18.45, 138.8 to 234.6) | 171.32 (18.40, 103.6 to 219) | 0.005 | |
| Outer Retina (ONL/HFL-RPE) (mean, standard deviation, range, um) | Central thickness | 179.11 (18.52, 125.2 to 228.8) | 180.54 (18.13, 125.2 to 228.8) | 178.17 (18.78, 129.1 to 217) | 0.42 |
| Juxtafoveal nasal thickness |
125.57 (18.43, 84to 166.2) | 126.31 (18.97, 86 to 166.2) | 125.09 (18.14, 84 to 164.2) | 0.68 | |
| Juxtafoveal temporal thickness | 133.13 (16.26, 69.1 to 172.1) | 132.91(16.46, 84.1 to 166.2) | 133.27 (16.20, 69.1 to 172.1) | 0.89 | |
| Ellipsoid zone (EZ-RPE) (mean, standard deviation, range, um) | Central thickness | 50.58 (6.01, 37.1 to 68.4) | 50.42 (6.25, 39.1 to 68.4) | 50.68 (5.879, 37.1 to 66.5) | 0.78 |
| Juxtafoveal nasal thickness |
34.92 (5.52, 19.6 to 48.9) | 31.10 (6.04, 19.6 to 48.9) | 35.41 (5.13, 25.4 to 48.9) | 0.17 | |
| Juxtafoveal temporal thickness | 33.39 (5.47, 21.5 to 58.7) | 33.67 (5.63, 21.5 to 48.9) | 33.20 (5.39, 21.5 to 58.7) | 0.59 | |
| Area and Volumetric measurements | ONL-EZ Central Foveal Area (mm2) | 0.55 (0.05, 0.43 to 0.73) | 0.55 (0.06, 0.45 to 0.73) | 0.55 (0.05, 0.43 to 0.64) | 0.60 |
| ONL-EZ Volume (mm3) | 2.87 (0.22, 2.41 to 3.57) | 2.87 (0.24, 2.42 to 3.58) | 2.88 (0.21, 2.41 to 3.36) | 0.61 | |
| EZ-RPE Central Foveal Area (mm2) | 0.21 (0.02, 0.16 to 0.31) | 0.21 (0.03, 0.16 to 0.31) | 0.21 (0.02, 0.16 to .29) | 0.88 | |
| EZ-RPE Volume (mm3) | 1.20 (0.10, 0.97 to 1.68) | 1.2 (0.11, .97 to 1.68) | 1.2 (0.1, .99 to 1.6) | 0.76 | |
| ONL-RPE Central Foveal Area (mm2) | 0.76 (0.06, 0.63 to 0.96) | 0.77 (0.06, 0.65 to 0.96) | 0.76 (0.06, 0.62 to 0.92) | 0.58 | |
| ONL-RPE Volume (mm3) | 4.08 (0.27, 3.53 to 4.84) | 4.07 (0.27, 3.53 to 4.78) | 4.08 (0.27, 3.57 to 4.84) | 0.75 | |
| En face measurements | Twenty-micron EZ Map Coverage (%) | 0.87 (1.13, 0.01 to 4.94) | 0.99 (1.28, 0.12 to 4.93) | .78 (1.01, 0 to .62) | 0.25 |
| Zero-micron EZ Map Coverage (%) | 0.12 (0.14, 0 to 1.10) | 0.1 (0.16, 0 to 1.1) | .13 (0.13, 0 to .62) | 0.29 |