[Razorback1980]

I have never tried to open mine, but can't you take the lens off and use a glass polish to clean them? I know of some stuff for plastic, but if they are glass, then use a glass polish and that should clean them right up. Probably could put some rain-x on there to help keep them from getting dull in the future although I'm not sure how rain-x would handle the heat. Might want to read the bottle before doing that.