I took a lesson from a guest coach at Lake Placid and after watching me she recommended that I try skating without my glasses.
I wear tri-focals (Hello, old age and death) and the coach told me that they caused me to unconsciously hold my head in an awkward position. Now I know that looking down at the ice has the power to pull you off-balance, so I was willing to give it a try.
Did I have a miraculous fix to my skating? Hard to tell. My stroking did improve, and my head position and posture got better and some of my skills I have difficulty with did get incrementally better. But was it, "Take off your glasses and you get an axel?" No.
Is it worth a try? Well, if you're not Velma in Scooby-doo and you have a reasonable degree of vision, I'd say yes. You certainly don't want to skate in a competion with glasses on, so why not train without them?
The only problem was that I now have to keep my glasses, a pen, and my skating card in my bra. It's a little crowded in there when I need something.