The whites of my eyes are gray- what can you tell me about this?

Most likely benign: The white part of your eye is called the sclera. The sclera can accumulate pigmentation: blue, grey or brown discoloration due to melanin, a natural occurring pigment. Some rare cases are a form of "pre-cancer" - so you should let your eye md check you out. Rarely, certain silver containing medications can turn the sclera blue. Most cases are benign aging changes.