The eyes of a Cuban rock iguana, a gargoyle gecko, a blue-eyed black lemur, a southern ground ... populations of blind cavefish—pinkish-white creatures with skin covering where their eyes ...

Nocturnal animals tend to have proportionally bigger eyes than humans do. They also tend to have pupils that open more widely in low light. So, at the outset, nocturnal eyes gather more light than ...

Perspective from Douglas R. Fredrick, MD, FAAP Flash photos typically produce a red reflection in people’s eyes, but sometimes that reflection can appear white or gray, which is known as leukocoria.

Seeing through one eye or many, in technicolour or black and white, few animals experience the world as we do. By analysing the properties of animals' visual systems, we can model what the world would ...