Table.
Retinal and Choroidal Optical Coherence Tomography Characteristics for Healthy Volunteers and Patients With Intermediate Dry AMD in Sitting and Supine Positions
| Characteristic | Mean (SD) [Range] | Difference, %a | P Value | |
|---|---|---|---|---|
| Sitting | Supine | |||
| Healthy (n = 8) | ||||
| CMT, μm | 321 (9) [309–334] |
325 (14) [311–353] |
+1.4 | .20 |
| TMV, mm3 | 8.64(0.4) [7.98–9.02] |
8.62 (0.3) [8.04–8.95] |
−0.2 | .50 |
| CT, μm | 205.97 (28.74) [161.75–251.38] |
203.21 (30.52) [153.37–249.63] |
−1.3 | .10 |
| CCET, μm | 9.89 (1.69) [7.15–12.5] |
8.4 (1.3) [6.92–10.7] |
−15.0 | .02 |
| AMD (n = 8) | ||||
| CMT, μm | 290 (27) [229–311] |
298 (27) [229–329] |
+2.6 | .20 |
| TMV,mm3 | 8.32 (0.77) [6.58–9.15] |
8.39 (0.79) [6.59–9.07] |
+0.8 | .50 |
| CT, μm | 180.38 (58.76) [124.28–306.78] |
182.24 (60.0) [126.56–314.51] |
+1.0 | .20 |
| CCET, μm | 16.73 (6.26) [10.31–27.38] |
14.88 (4.19) [8.76–20.8] |
−11.1 | .10 |
Abbreviations: AMD, age-related macular degeneration; CCET, choriocapillaris-equivalent thickness; CMT, central macular thickness; CT, choroidal thickness; TMV, total macular volume.
a
Percentage difference between sitting and supine positions; positive and negative indicate an increase and decrease, respectively.