I saw the post by Albert related to wet roads and decided to start one on your preference for eye protection when driving in the rain. I have been caught several times wearing a Scorpion EXO100 helmet with a flip down visor in heavy rainfall. Rain was able to get behind the visor and on my glasses effectively blinding me. I've also had my full face fog up at the worst times when I've used it.
The question, what do you fellows use in terms of helmets and anti fogging agents to help you keep your eyes on the road in the rain, especially if you wear glasses?
