Presbyopia has kicked in, I see great from 3 to 20 ft, but not shorter or further, so they are bifocal, one of the tricks is deciding where you want that line to be. I think place it low as you don't want to be trying to look at anything but your gauges with the close up lens. As far as I know, progressives are not an option. Got to where I had to look good to determine if I was seeing a 3 or a 2 on the gauge and I didn't want to be in a cave thinking I had 3000 psi when I only had 2000. That 1000 delta might be important

so once I was sure I had the mask I liked, I popped for the lenses, glad I did too, it has helped lots.
Edd wears one close up contact and one far contact, first I don't want to put anything in my eyes, and thinking about having one eye focused opposite the other, gives me a headache, but I suppose that's an option too.
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