Actually,it changes with your age.It is normal.Many people have different colors of their whites in their different ages.It is no big deal.However,we can't exclude other reasons such as an eye infection,anemia, and something else.By the way,except for the color of your whites' changing,do you have other symptoms?If you do,I suggest you to go to see the doctor soon,or you may get things worse.If the reason is pigmentation,you should take in more vitamins.Make sure yourself to have a healthy life.
03/13/2013