Thank you all for cheering me on. It is a HUGE relief to have that over with.
Regarding your question about the mask. Back in Nov when I was fitted, the mask was stretched over my face while warm which to me felt great. Because the mesh didn't stretch that much at the base of my nose, she pinched it away from my nose/nostrils a bit. The end result looked pretty funny. Sort of like a huge pixie nose. I don't know how else to describe it. The mask was left in place for maybe 5-10 minutes to harden. Following that, I went to have the CT scan done at which time the mask was used. During treatments, the most pressure was across the forehead but it didn't bother me. If you know you're claustrophobic, my only recommendation would be to just keep your eyes closed and you'll do fine. I tend to do that during MRIs also. Also you could take advantage of the anti anxiety med that is offered beforehand.
Meant to mention that like you, I tend to always get light weight frames because I can't stand pressure on the bridge of my nose either. Now that I've hit that lovely bifocal stage, I got progressive lenses awhile back. I finally got to where I can use them but I have to be sitting down. With the odd feeling that I sometimes get balance wise, I don't trust myself attempting to walk with them on. Next year, I'm definitely getting straight bifocal lenses.