Good news - Learning to control eye movements trains surgeons faster
Last updated 12/2/2011 12:15:28 PM
Learning to control eye movements trains surgeons faster
Surgeons can learn their skills more quickly if they are taught how to control their eye movements, new research suggests.
Trainee surgeons learn technical surgical skills more rapidly and deal better with the stress of the operating theatre if they are taught to mimic the eye movements of experts.
This research, led by the University of Exeter, could transform the way in which surgeons are trained to be ready for the operating theatre. The researchers identified differences in the eye movements of expert and novice surgeons. They devised a gaze training programme, which taught the novices the ‘expert' visual control patterns. This enabled them to learn technical skills more quickly than their fellow students and perform these skills in distracting conditions similar to the operating room.
Thirty medical students were divided into three groups, each undertaking a different type of training. The ‘gaze trained' group of students was shown a video, captured by an eye tracker, displaying the visual control of an experienced surgeon. The footage highlighted exactly where and when the surgeon's eyes were fixed during a simulated surgical task. The students then conducted the task themselves, wearing the same eye-tracking device. During the task they were encouraged to adopt the same eye movements as those of the expert surgeon.
Students learned that successful surgeons ‘lock' their eyes to a critical location while performing complex movements using surgical instruments. This prevents them from tracking the tip of the surgical tool, helping them to be accurate and avoid being distracted.After repeating the task a number of times, the students' eye movements soon mimicked those of a far more experienced surgeon.
Members of the other groups, who were either taught how to move the surgical instruments or were left to their own devices, did not learn as quickly. Those students' performance broke down when they were put into conditions that simulated the environment of the operating theatre and they needed to multi-task.
Dr Samuel Vine of the University of Exeter explained: "This highlights the important link between the eye and hand in the performance of motor skills. Teaching eye movements rather than the motor skills may have reduced the working memory required to complete the task. This may be why they were able to multi-task whilst the other groups were not.
"The findings from our research highlight the potential for surgical educators to ‘speed up' the initial phase of technical skill learning, getting trainees ready for the operating room earlier and therefore enabling them to gain more ‘hands on' experience. This is important against a backdrop of reduced government budgets and new EU working time directives, meaning that in the UK we have less money and less time to deliver specialist surgical training."
This is the first study to examine the benefits of gaze training in surgical skills training. The research team is working to develop a software training package that will automatically guide trainees to adopt surgeons eye movements.