The claim: An image shows a rare eye condition called 'pupula duplex' A striking image online is catching the eyes of social media users. "The Pupula duplex is a medical oddity that is characterized ...

Dilated pupils mean that your pupils appear larger in size. The most common reason for dilated pupils is low light in a dark room since lower light causes your pupils to grow. Dilated pupils are also ...

The size of your pupils varies throughout the day, but most people’s pupils fall within a particular size range. We’ll look at when and why your pupils change size. First, the range of “normal” pupil ...