I have grey spots in the white part of my eye?!

They're like light grey and I found out about them 2 years ago when my friend helped put mascara on my eyelashes and I thought the grey spots were just the mascara!. It's 2 years later and they're still there!. They're kind of light grey and not really spots!. One medium sized grey "spot" is like on the bottom of my eyes and you can't see it unless I roll my eyes up or something!. The other one is on my left eye and its just there!. I don't feel anything different but I'd like to know what are they!?Www@Answer-Health@Com

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