Tigers have round pupils, but domestic cats have vertical slits in the center of their eyes. What gives? A census of the shapes of animals' pupils suggests size and way of life each play a big role.

How to Change the Shape of Your Pupil in Photoshop. People take the shape of the human eye for granted. Changing the shape of the pupils in your own eyes is both a subtle and dramatic way to ...

There's a reason why the domestic cat's pupil has its distinctive, vertical slitted shape and the grazing goat's its horizontal, flattened look. In both cases, the eye's shape has evolved to help ...

But in the dark, these pupils would pretty much cover all of the visible surface of the eye. The tarsier eyes functionally pretty similar to that of an owl eye, meaning it has really good ability ...

The shape of a cat's pupil has to do with their lifestyle habits, with nocturnal cats having more slit shaped pupils to help them see in low light.

While lust is driven by a strong physical desire, attraction and attachment encompass a strong emotional relationship or ...

What makes your pupils stay open, or dilated? WebMD explains the causes, and what to do if you have dilated pupils.

Large dinosaur predators, such as Tyrannosaurus rex, evolved different shapes of eye sockets to better deal with high bite forces, new research has shown.

Despite the unusual pupil shape, the cuttlefish eye otherwise operates in broadly the same way as a conventional camera, and indeed our own eyes, using a single lens to focus light onto the retina.

The pupil shape is intended to reduce distracting lights not in the field of vision and balance brightness levels.

The eye flashlight can be turned on and off via what appears to be a proximity sensor. Stanley has also experimented with a range of different colors and even pupil shapes.