I just recently moved to a 1/2 helmet from a 3/4. Previously, I would just add the wrap around face shield to the 3/4 helmet when it rained. (I wear Rx glasses, too.) I have been looking for a face shield for a 1/2 helmet and found one at motorcycle-superstore.com made by Bell for approx. $11-$12. It snaps on to replace the normal visor and you can also swing it up if you want. I'm going to order one and give it a try.

 

I have a Scorpion EXO 100. It is a 1/2 helmet with a internal retractable half face shield that stores up in the helmet when not in use. Then when you need the visor you can drop it down over your eyes. I have used it twice in the rain and works well.

 

I have a 1/2 face shield so when it rains take off the visor and put it on, keeps the water off of the face to just below the nose... works fine

 

+1 for the FF helmet

 

I use a FF and it is great in the rain. Last year on a trip I rode in 4 hours of rain with not problem.
CW

 

The only thing that really works is a helmet with a face shield.

 

FF with face shield and breath deflector inside of helmet if needed, they work great.

 

I wear this thing called a full face helmet. It acts as a crumple zone in case of an accident because your skull doesn't do such a good job. The guy below didn't figure that out in time....

http://www.flickr.com/photos/roentge...7601198404570/

 

global vision spider goggles. I bought these just for rain. My sunglass style goggles would fog and get rain inside the lense etc.. could not see. I tried these and they worked awesome. I have roughly 20 hours of rain riding with these since May and have only stopped one time because water got in the left inside lens and was distorting my vision. I usually just wipe the outside with my glove if I get water build up. Planned on rainXing one of the lenses to see how it works.

http://www.amazon.com/Global-Vision-.../dp/B000MT7OSK

 

I wear clear safety glasses that I get from work, they sell similar ones at lowes.