His gaze softens as he draws closer to you. With one hand around your waist and the other cradling your jaw, he pulls you in.

Though it is rarely the case, it can be a sign of a bigger problem if anisocoria just shows up or the size of your two pupils is suddenly different for no apparent reason. Coloboma: This happens ...

To find out what those advantages might be, the researchers analyzed the abilities of the two pupil shapes and how they could serve the different visual requirements of predators and prey.