IPD, a volvo aftermarket and performance supplier has a plastic polish that you can use to clear up your lenses, which is a common problem for the volvo lenses. I'm sure it would work for your SEL. Here's the link for the stuff. It's cheap, only about $8 a bottle.

http://www.ipdusa.com/ProductsCat.aspx?CategoryID=651&NodeID=2514&RootID=629

Good luck.