That's just the problem: I don't know what the root cause of the redness. I always figured it was from rubbing the eyes excessively when they itched. I don't know...
The prosthetic contact can be used for a severly damaged eye for cosmetic improvment. It would not be appropriate just to cover redness. You would need to get at the root cause, otherwise the contact would just worseen the underlying problem. Now if you want to get into a discussion about how to work with your redness problem, that is is more realistic situation.
MJK MD