Under my full face I wear nothing, but with the half helmet on I started off wearing Oakley blades but the wind blast made me tear up real bad, so I bought a pair of WileyX XL-1's with Light Adjusting lenses. They have a foam piece that outlines the inside of the glasses, supposed to make a seal but doesn't really work for me, I guess it may depend on the shape of your face, have less tears with the WhileyX's, but still have some tearing. The LA lenses are great though and work as advertised.
