Comparison of gaze behaviour of trainee and experienced surgeons during laparoscopic gastric bypass.
Published: 28th November 2017
Authors: S. Erridge, H. Ashraf, S. Purkayastha, A. Darzi, M. H. Sodergren
Eye tracking presents a novel tool that could be used to profile skill levels in surgery objectively. The primary aim of this study was to identify differences in gaze behaviour between expert and junior surgeons performing a laparoscopic Roux‐en‐Y gastric bypass (LRYGB) for obesity.
This prospective observational study used a lightweight eye‐tracking apparatus to determine the difference in gaze behaviours between expert (more than 75 procedures) and junior (75 or fewer procedures) surgeons at defined stages of LRYGB. Primary endpoints were normalized dwell time and fixation frequency. Secondary endpoints were blink rate, maximum pupil size and rate of pupil change.
A total of 20 procedures (12 junior, 8 expert) were analysed. Compared with juniors, experts showed a prolonged dwell time on the screen during angle of His dissection (median (range) 91·20 (83·40–94·40)
These results suggest that experts display more focused attention on significant stimuli, alongside experiencing a reduced mental workload and having increased concentration. This has the potential for future use in validation of surgical skill in high‐stakes assessment.Read more
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