Can your eyes reveal pain? new device aims to end opioid guesswork

This study tests a device that uses changes in pupil size to measure pain and how well opioid painkillers are working. The goal is to replace subjective pain scores with an objective measurement, helping doctors prescribe opioids more safely. The study includes 40 children and young adults aged 7 to 21 who are already receiving opioids for pain. Researchers will compare pupil reflex data before and after opioid doses to see if the device can accurately detect pain type and drug effectiveness.