Someone suggested using a helmet visor in the rain when commuting.
With glasses and poor night vision, I have found commuting in the rain at night very hard.

I placed a NorthFace goretex cap under my bike helmet this past week to help keep the rain off my glasses. Worked.

I had another unexpected positive experience with this. When a car is coming in the opposite direction and shines its lights I get blinded for a second. With the hat brim, I can shield the blinding light and see better. A big wonderful surprise.....

So, at night, now I use my hat under my helmet.......all the time..........

Thanks smart BF posters........

This is one of the things I hate about riding in the rain. I bought something similar to what you did and plan on giving it a try next week. BF is the first place I go when looking for a solution to something bike related. Best resource on the Internet.