Table 2.
Ocular variables
| Variable | Seated | HDT | HDT+CO2 |
|---|---|---|---|
| Central Macular Thickness, μm | 274.2 (265.6–282.8) | 273.4 (264.7–282.0) | 274.1 (265.5–282.8) |
| Average RNFL Thickness, μm | 104.4 (97.1–111.7) | 103.9 (96.6–111.2) | 103.5 (96.2–110.8) |
| BMO area, mm2 | 2.09 (1.93–2.25) | 2.11 (1.95–2.27)a | 2.09 (1.93–2.26) |
| BMO‐MRW, μm | 365.1 (337.3–392.9) | 363.8 (336.0–391.6) | 362.7 (334.9–390.5) |
| Axial Length, mm | 24.44 (23.42–25.46) | 24.52 (23.50–25.54) | 24.54 (23.52–25.57) |
| ONSD, mm | 6.23 (5.71–6.75) | 6.58 (6.06–7.10)a | 6.66 (6.14–7.18)a |
| Choroid Thickness, μm | 348.1 (291.1–405.2) | 361 (304.0–418.0)a | 356.7 (299.6–413.7)a |
| Visual Acuity, logMAR | 0.10 (−0.11−0.31) | 0.14 (−0.06−0.35) | 0.09 (−0.12−0.30) |
BMO, Bruch's membrane opening; MRW, minimum rim width; ONSD, optic nerve sheath diameter; RNFL, retinal nerve fiber layer. Values are mean (95% CI).
a
P < 0.05 versus Seated. There were no significant differences between HDT and HDT + CO2.