Hi Fellow Commuters

This was my first week of commuting on bike and it has been a very satisfying experience. I will definitely ride more and drive less to work now. And I thank you all for providing encouragements and advice (directly or indirectly)

Now, I have a small question. And please point me to another thread if this has already been discussed. My commute is 17 miles one way and it is all on back roads. However, the last couple of days, I've been having trouble keeping my eyes clean. The wind and passing vehicles would kick up some dust that would get into my eyes. So, I started wearing sunglasses. While that kept the dust out, it allowed sweat to get into my eyes

So, If I dont wear sunglasses, dust gets into my eyes.
If I wear sunglasses, sweat gets into my eyes.

What do I do?
My sunglasses are not any biking specific glasses though. Do I need to get biking specific glasses? Anything you guys can recommend?

TIA
Amitoj