Normally, our pupils dilate in response to changing light; as it gets darker, our pupils get larger. But they expand in size for other reasons as well, including when we’re sexually aroused and when ...

Intraoperative floppy iris syndrome (IFIS) occurs owing to drug-induced blockade of the α-1a receptors present in the iris dilator muscle in a large proportion of patients who take or have previously ...

The FDA has approved phentolamine ophthalmic solution (Ryzumvi) 0.75% for treatment-induced mydriasis, Viatris and Ocuphire Pharma announced. The approval stipulates use of the eye drops to manage ...

The science of pupillometry takes a common intuition — that you can tell a lot about someone when you look them in the eye — and makes it concrete, measurable, and extraordinarily useful. By combining ...

Saturday night, Scottish boxer Josh Taylor spent roughly an hour getting punched in the face by Ukrainian veteran Viktor Postol, an opponent he admittedly underestimated. The Prestonpans boxer won the ...