Phil Jevon, PGCE, BSc, RGN, is resuscitation officer/clinical skills lead, honorary clinical lecturer, Manor Hospital, Walsall. Click here for more articles in our Practical Procedures series.

Researchers at the University of Washington are developing a simple way to assess potential concussions and other brain injuries with just a smartphone. The team has developed an app called ...

OCT is a noninvasive, noncontact imaging system providing real-time, high-resolution, cross-sectional images using near infrared light interferometry. Pupil assessment can be performed using OCT to ...

Pupillometry might sound like a technique a teacher would use to keep her class under control, but it’s actually an ingenious way of assessing brain health by measuring data from patients’ eyes. This ...

Israeli startup BrainWatch Tech is developing an eye-pupil monitoring technology that will notify healthcare professionals of changes in the pupillary reactions of patients with severe brain injury, ...

Medically reviewed by Christine L. Larsen, MD Key Takeaways Medications, trauma, and medical conditions can cause miosis or ...

When people feel disgust or sadness, their pupils involuntarily widen. Conversely, feelings of anger are associated with a narrowing of the pupils, setting it apart from other negative mental states.