Table. Retinal Nerve Fiber Layer Optical Coherence Tomography Quality and Thickness Measurements vs 10-Year Glaucoma Status.
| RNFL (quality and thickness) | P value comparing group meansa | Mean (SD) [range] | ||
|---|---|---|---|---|
| Glaucoma (n = 15) | Glaucoma suspect (n = 13) | Neither (n = 44) | ||
| Image quality, 1-40 dB | .77 | 28.0 (5.9) [20.0-40.0] | 27.0 (6.9) [15.0-37.0] | 26.7 (5.9) [14.0-37.0] |
| Overall, μm | .08 | 93.3 (18.1) [55.0-128.0] | 104.2 (12.7) [87.0-126.0] | 103.5 (15.4) [63.0-145.0] |
| Nasal, μm | .80 | 74.8 (18.4) [36.0-103.0] | 76.4 (22.6) [45.0-113.0] | 79.1 (20.4) [42.0-129.0] |
| Nasal inferior, μm | .06 | 96.3 (27.5) [56.0-153.0] | 105.7 (32.3) [55.0-161.0] | 121.8 (41.1) [63.0-274.0] |
| Nasal superior, μm | .36 | 100.1 (31.9) [39.0-159.0] | 111.8 (29.8) [71.0-150.0] | 113.2 (30.3) [56.0-195.0] |
| Temporal, μm | .08 | 75.1 (16.6) [52.0-107.0] | 87.8 (15.4) [68.0-115.0] | 78.7 (14.9) [55.0-118.0] |
| Temporal inferior, μm | .20 | 133.1 (33.1) [68.0-191.0] | 147.5 (28.8) [66.0-192.0] | 147.1 (23.5) [100.0-206.0] |
| Temporal superior, μm | .08 | 117.2 (33.4) [43.0-177.0] | 136.5 (23.3) [82.0-169.0] | 134.1 (24.8) [83.0-187.0] |
Abbreviation: RNFL, retinal nerve fiber layer.
a
For each RNFL measurement, a 1-way fixed-effects analysis of variance F test was performed to compare the 3 group means.