Doing better than bifocals for dive masks?

[Arctic Mike]

That won't work, because the refractive index of water and glass are too close to each other. Lenses have to be in air to work.

So much for that idea! I don't think my old glasses would work because they are very small frames but I will try to see if they'll wedge into a mask.

[FW]

So much for that idea! I don't think my old glasses would work because they are very small frames but I will try to see if they'll wedge into a mask.

Try adding stainless steel "safety wire" to the hinges, to make them "bigger" so they will stay in place. It doesn't have to be too tight, just enough to hold them in place until you can get the mask on. Your nose will do the rest

[pwl4476]

Try this place, and you do not need a dive shop to deal with.

http://www.prescriptiondivemasks.com/


Most of the time they have the msk you want or you can send them one to fix for you.

SLIM

I'm in the same camp as Slim. I've used PDM for my last 3 masks and had bifocals (distance and gauge readers) added. They work well for me. It's been two years since I bought a mask from them and I'm due. They may have progressives by now.

I've used a Tusa Visulator all 3 times. When I'm due I order a new glass plate from Tusa (about $15.00) and send the new glass and old lense/mask back. They return the mask with the new glass and lenses installed and I pop the old one into an older mask as a backup.

[phil_p]

Jack, Forrest, Slim, Pwl -

Thanks for replying; it's most appreciated.

I phoned DiveSight today. The person with whom I spoke said that no one manufactures a trifocal or a varilux lens for dive masks.

I also phoned Prescription Dive Masks. The first person with whom I spoke said that PDM would grind a trifocal, but was reluctant to do so, because (some?) divers found the extra line disorienting. I then handed the phone to my wife, who spoke with (another) Linda-- Linda Young?-- about her vision at some length. This person offered to work with our optometrist after my wife's next annual eye check. My wife was impressed by Ms. Young's helpfulness.

Ms. Young also said that progressive lenses like Varilux would exhibit "considerable" distortion under water, but didn't elaborate.

I was curious about one other thing, Forrest. Are your glasses trifocals? I'm guessing not, but it's hard to tell from the photo.

[FW]

I was curious about one other thing, Forrest. Are your glasses trifocals? I'm guessing not, but it's hard to tell from the photo.

No, just bifocals, but there wouldn't be any difference. The glasses are in air, like they were designed, so would work the same.