If you wear bi-focals now don't get lasik. I made a serious mistake several years ago and had lasik done and it destroyed my up close vision. I did get distant vision but need glasses for everything up close. The doctor failed to inform me that the proceedure would zap whatever close vision I had. Now with lasik, bi-focals and glasses open rifle sights are just about not an option anymore. With anti-reflective coatings on all my glasses I don't get fogged up. I also never wear a mask though so maybe that's the real reason. Is the face mask for cold or cover-up?? I don't see a reason for a face mask and I've hunted in nasty cold stuff, like -30*. Yes I was cold but face was good with a wool hat on my head. Feet and hands were the problem.