Incredibly difficult to clean!

I really wanted to be super pleased with these, but they seem to be getting worse as days go by. Another review or two mentioned how difficult they are to clean? Believe it. They are unbelievably hard to clean, and I really don't know WHY they are dirty...I've never put my hands on the lenses. This last time I tried to wipe them off I noticed a fracture up in the corner. Don't know if it was always there since it's not in my line of vision, but I am getting increasingly tired of wiping these off; just to have them be as bad if not WORSE than before I wiped them. I will not purchase again.

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