If you've ever taken a picture of your baby or toddler – and let's be real, you've taken many – you've probably noticed ...

If the involved eye is looking in slightly toward the ... When the fundus reflex looks white, or when the pupil looks white with direct illumination, leukocoria is the most accurate description ...

In the bright light, pupils constrict (narrow) to prevent too much light from entering the eye and causing a "white out." The pupil is not the same thing as the iris, the colored structure behind ...

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 ...

Dilated pupils are also caused by drug use, sexual attraction, brain injury, eye injury, certain medications, or benign episodic unilateral mydriasis (BEUM). The size of your pupils can say a lot ...