I don't know about you guys, but if my helmet sends wind up my face and into my eyes, they dry out in the first 15 minutes. After that, it's pure pain, as my dry, blood-shot eyes kill me...
...but I've found that if my helmet has a chin curtain, all that buffeting is gone. While upper-end lids tend to come with these from the factory, other bargain buckets don't. And I've been loving my Scorpion EXO700 helmet on all fronts, except for the fact it doesn't have a chin curtain.
But thankfully a quick call to Scorpion revealed that I can run the chin curtain from the more expensive EXO1000, problem fixed! Now I'm loving life and my eyes are too!