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Overall mean length of surgery, baseline, and mean rise in intraoperative pressure between Group 1 and Group 2.
| Parameter | Group 1 | Group 2 | P value |
| Age (years), mean (SD) | 69 (14) | 63 (16) | .15 |
| Baseline IOPa (mm Hg), mean (SD) | 16 (4) | 17 (2.9) | .64 |
| Length of surgery (minutes), mean (SD) | 142 (49) | 268 (99) | <.001 |
| Maximum Trendelenburg tilt (degree), mean (SD) | 10 (5) | 15 (5) | <.001 |
| Maximum increase from baseline IOP intraoperatively (mm Hg), mean (SD) | 9 (5) | 15 (5) | <.001 |
aIOP: intraocular pressure.
