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. Author manuscript; available in PMC: 2018 Sep 25.
Published in final edited form as: Nat Biomed Eng. 2018 Jun 18;2:649–656. doi: 10.1038/s41551-018-0248-4

Figure 4. Objective outcome measures: manual (control) versus robot-assisted retinal membrane peels.

Figure 4

(A) The median (interquartile range, IQR) time (min:sec) taken to position the 23 G pick close to the retinal surface from its entry point into the eye was 2:26 (2:52) and 0:12 (0:04) in the robot (n = 6) and control (n = 6) eyes respectively (p=0.002). (B) The median (IQR) time (min:sec) taken to create an elevated flap of membrane in control and robot eyes was 1:20 (0:58) and 4:55 (2:20) respectively (p=0.06). (C) The mean (95% CI) total duration of surgery was significantly longer in robot cases, 55 min (51 – 60) compared to control cases, 31 min (27 – 35) (p<0.0001). (D) There was no statistically significant difference in the number of micro-traumas between the robot and control groups. (A-B) Median and errors bars representing the IQR are shown within the scatter plots. Mean and 95% CI are shown in (C). Median (in green) and no error bars in panel (D).