The pupil of the human eye is normally black. In flash photographs the pupil may appear red. This is called the "red reflex" by health care providers and is normal.
Sometimes, the pupil of the eye may appear white, or the normal red reflex may appear to be white. This not a normal condition, and you need to see an eye care provider right away.
There are many different causes of white pupil or white reflex. Other conditions also can mimic white pupil. If the cornea, which is normally clear, becomes cloudy, it may look similar to a white pupil. Although the causes of a cloudy or white cornea are different from those of a white pupil or white reflex, these problems also need medical attention right away.
Cataracts may also cause the pupil to appear white.