In the pharmaceutical industry, product inspection is important to maintain the high quality of products. It is also regulated under the USP Chapter <1790> - Visual Inspection of Injections.
However, it can be difficult to automate the inspection of transparent containers such as vials, injectable solutions, and infusions. Visual inspection by ‘a human’ is the key.
Another issue with human visual inspection is that the speed and accuracy varies from person to person. Tobii Pro eye-tracking tools solve this problem.
The values of visual inspection with Tobii Pro eye tracking solutions:
Tobii Pro's eye tracking analysis has been used to successfully reduce the training period for new inspectors in the visual and visual inspection process, and to achieve significant results in passing on skills and improving productivity.
Issue: Taking time to train human resources
The method: Clarify how expert inspectors find foreign objects and standardize their skills based on eye contact, hand movements, and interviews, and reflect these findings in the "Standard Operating Procedures”.
Conclusion: Reduce the training period from one month to two weeks.
Issue: Wanting to increase the number of people who can find artifacts by visual inspection. Since there is no objective standard to judge whether an object is good or bad, we rely on the judgment of expert workers.
The method: Conduct tests to find defective products and analyze the variation in the way workers look at each other. The know-how of expert workers is extracted and standardized based on eye data, hand movement, and interviews.
Conclusion: Improved detection rate for unskilled workers by 30%.
Issue: The difference in time between expert and novice workers, resulting in variations in production. There are also accidents caused by machine operation.
The method: Standardize the skills of inspectors and incorporate the manufacturing process into videos to be used as "Standard Operating Procedures”.
Conclusion: Identifying safe and efficient manufacturing procedures has led to increased productivity.
Eye tracking is a technology that can track and measure eye movements and gaze.
This makes it possible to record gaze data such as when, where, how long, and how many times the inspector looks and can be converted into actionable data.
Eye tracking has been an effective tool in visualizing and documenting the "Non-Verbal Skills" of expert inspectors. This can help narrow the gap between experts with high accuracy and speed and the rest.
With eye tracking it becomes easy to document the sub-conscious decision making process of experts and include them in training materials and Standard Operating Procedures (SOPs).
An eye tracker uses invisible near-infrared light and high-definition cameras to project light onto the eye and record the direction it’s reflected off the cornea. Advanced algorithms are then used to calculate the position of the eye and determine exactly where it is focused. This makes it possible to measure and study visual behavior and fine eye movements, as the position of the eye can be mapped multiple times a second. How quickly an eye tracker can capture these images is known as its frequency. A recording can also be made of the scene a person is looking at and using eye tracking software it’s possible to produce a visual map of how the person viewed elements of the scene.