I read about it somewhere can't remember though, when I have flash photos of myself taken my eye isn't red like most but my left eye goes white?

? If you were older i might have guess that you had a cataract but that would be unusual age 18. Have you family doctor look at your eyes.
Leukocoria. A white pupil (leukocoria) can be caused by a number of different things. See your eye doctor to determine the cause.