Try 3M Plastic Cleaner on the headlight lenses. I thought I gad the same problem and had made the appointment to get the drivers side replaced. The 3M Plastic cleaner which is available on their web site for about 8 bucks will fix your problem 9 times outta 10. I did mine back in August and they are crystal clear. Don't know about other plastic cleaners, I was told here, to use the 3M.

Pat