P.148 Action-related fixation in microsuturing, a new gaze behavior metric to differentiate the level of expertise

Background: Gaze behavior differences between expert and novice surgeons have been established in general surgery literature. Limited information is available about surgeon’s visual attention during microsurgery procedures where surgical microscope used. Methods: 4 experts 3 novices performed 37 independent sutures under the microscope. Eye movements of scene video performance were recorded. Total suturing time subtask times compared level expertise. We defined three discrete actions examined eye gaze (fixation) directly related to each these actions. Fixation duration (total, pre-action,and post-action duration) novice, over subtasks (piercing, exiting cutting) pre- phases. Results: Expert completed suture with shorter total displayed longer fixation than novices. Experts also maintained their engagement constantly comparison who required a for challenging (piercing). use fixation, this pattern distributed all subtasks. This strategy was not shown Conclusions: The action-related can be used evaluate microsurgeons’ expertise education training.