This poster presents a new method to improve accuracy in pupillometry, showcasing exciting advancements in pupillometry. It introduces more precise techniques for measuring pupil size and movement, which could significantly enhance the reliability of studies on vision, brain activity, and neurological assessments
The poster introduces a breakthrough approach. Instead of measuring pupil size in pixels, researchers compare it to the size of the limbus—the border of the iris. This creates a normalized measurement that remains consistent regardless of eye position or distance from the camera, resulting in more accurate data.
Eye movements were recorded using neuroClues and the borders of the pupil and limbus were manually marked. Specialized methods were applied to analyze this data, improving measurement precision.
By comparing pupil size to the limbus, the measurements stay much more stable, even if the eyes are moving in different directions. This helps avoid mistakes in tracking how big the pupil is.
Normally, the size and position of the pupil can change depending on where you’re looking or how big your pupil gets. But when we use the limbus as a reference, it removes these effects, making the measurements more reliable.
In actual recordings, even when the pupil and the eye edge changed a bit with eye movements, the size of the pupil (compared to the limbus) stayed more constant. This proves that the new method works better in real-world scenarios.
The implementation of this new method to improve accuracy in pupillometry holds the potential to reduce measurement errors and improve the quality of neurological assessments
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