Using eye tracking for quality assurance in the lab

Insidely > Using eye tracking for quality assurance in the lab

How to observe and analyze behaviour and real-time emotions in complex environments?

 

Follow us inside a chemistry lab to watch how we measure the behavior of a lab technician during the preparation of a solution.

Objectives

Our aim was to monitor the technician’s eye pattern movements/gaze behavior in the different phases of the preparation of a solution and monitor his focus of attention.

Tools

  • Analysis of attention and gazepaths with Tobii Eye Tracking Glasses 2
  • Physiological activation measurements with Shimmer GSR 3+

Protocol

The technician was equipped with Tobii Eye Tracking Glasses 2 before the preparation. For each phases of the preparation, we monitored where the technician was looking and the dispersion of his attention on the lab bench.

Learnings

This short study highlights a method for analyzing and monitoring human operator’s behaviour. We can observe the contribution of eye tracking to evaluate the compliance of procedures in complex environments. Eye tracking can be used along with other sensors to objectively measure affective and cognitive states in complex environments.

The many uses of eye tracking glasses

Operator attention perception

The following video shows how the dynamic display of gaze path allows us to observe the focus of attention of the lab technician. The red, yellow, and green colors represent the amount of time spent looking at a specific location. The more the attention is focused, the redder the fixation point gets.

Procedure compliance monitoring

As the technician was using the micropipette, his attention was properly focused on the selection of the right amount of solution. The eye movement pattern displayed by the eye tracking glasses shows that the procedure was properly followed.

Operator manipulation errors detection

A mistake occurred while the technician was weighing the ingredients (the test tube’s cap fell off). The eye tracker allows us to see how his attention wasn’t focused enough on the test tube’s cap, as we can see in the video.

Movements anticipation

As we can see in this video, the eye tracking glasses let us observe that the technician was able to direct his attention on the required material in order to anticipate his next movements.

Possible contamination event

Mistakes occurring during the preparation can be monitored easily, the gaze path feature allows us to notice possible contamination sources.

Workstation ergonomic problems identification

As shown in the video, an unnecessarily long time was needed in order to use the proper tools due to ergonomic problems on the lab bench. Ergonomics problems on the workstation are quickly spotted with a gaze path analysis.