Leukocoria means "white pupil." It describes a condition where the pupil of the eye is white rather than black. It is more common in children but can occur in adults as well.

It appears as a white, opaque, or yellowish spot in the pupil of the eye. This phenomenon may be more commonly known as ‘red eye’, ‘white pupil’, or ‘cat’s eye pupil’.

Photos of eye cancer can sometimes show signs of a tumor, such as a white reflection in the eyes or a change in pupil size. Learn more here.

For instance, at night, black bears have large, round, often yellow-to-orange (but sometimes red or green), nearly pupil-less eyes, set close to the ground. Wild feline eyes generally have a heavy ...

How to protect your eyes when the pupils are dilated. While your eyes are dilated, they will be more sensitive to light than usual. Try to avoid bright places. Wear sunglasses when you go outside.