I have to wear glasses or contacts, since the 2nd grade. Also, I practically have to shave my eyeballs and my uni-brow, so I've had to learn quite abit about maneuvering around specs. I'd recommend for the first shave or few, doing only With-The-Grain(WTG) strokes and maybe Cross the Grain(XTG) strokes in the upper-cheek. When you do ATG strokes, with glasses on, there is a chance you could slip. It's pretty easy to ding the blade, it will happened everytime they even come close to the edge of your glasses. And it always happens when you're half way through a shave. It will give you more room if you push them allllllll the way up the bridge your nose.