Are there any sports sunglasses which will not let sweat get into your eyes? More precisely a combination of sunblock and sweat that I’m talking about here :mad: 
Have you tried googles? You need something that presses against your skin while keeping the lens off your eye.
I needed something like this for motorcycling as the sweat from my eyebrows would get on the lenses. Lensese with foam around them worked for me, much like these:
http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=motorcycle+sunglasses
I wish something like that was available to put OVER my existing glasses.
Your sweat… or someone else’s?
I’d take someone else’s sweat over “sweatblock”!
Googles goggles…
You might try a redirecting sweatband.
Excellent! Thanks! I just ordered one.