Most of the time the haze is on the outside. Most plastic headlights suffer from this. Civics get it real bad. There is a write up in the DIY part of this site. It involves wet sanding the light and polishing it. I did this to my headlights and they are now look new. I also did the turn signals and the results were good. If you don't find it, post back here and I will explain the process.
This is another way to do it also:
https://www.honda-acura.net/forums/s...highlight=grit