Children's pupils may reveal shifting attention in ADHD, especially when off medication

The eyes are more than lenses to the outside world; they can also be windows that offer a glimpse into what's happening inside our bodies. What if the eyes could help us understand how attention shifts from one moment to the next? Scientists are now testing whether tiny changes in pupil size can serve as a physiological marker of these fluctuations in children with attention-deficit/hyperactivity disorder (ADHD).

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