I have both 3/4, 1/2 helmet and ware prescription glasses. When the sun is rising or just setting it will be in your eyes.
I tilt the helmet down to help shade my eyes and the glasses get in the way.
Make sure the helmet will take a sun shade or shield. Will have snaps across the front.
Looking cool is not an issue since I make anything I wear look good.
Padded glasses or goggles will stick out further and interfere with the positioning of the helmet.
A pull down shade from inside the helmet is too close for glasses.
My 2₡