Few people have spent time gazing into a sheep’s eyes, but if you have, you may have noticed something very strange about ...

New research published in Cognition and Emotion provides evidence that subtle changes in eye appearance can shape how people ... portraits of non-human primates with larger pupils elicited more ...

Human eyes are actually spheres. The part that we can see is only just the front. That coloured circle is called the iris and the black spot in the middle is the pupil. This is the part of the eye ...

So, at the outset, nocturnal eyes gather more light than human eyes do. After the light passes through the pupil, it is focused ... named after their relative shapes.) Cones work in bright light ...