For about 6 years I've been wearing Rx dive masks with bifocal lenses. The bifocals are better but I've always had a problem reading at 12-14" underwater. I repeated asked 2 different optometrists to set the focal length at 9". But always the same result: I still can't see close up.

Yesterday and for the first time, I met with Dr Alan Dean in Tallahassee for shooting glasses (another topic / another forum). Per my request, he read the dive mask lenses Rx and indeed the bifocal was set for 12-14". Did a little math with me to figure out the correct Rx and problem solved. Wrote me a correct Rx and explained the difference. And the lenses only cost $200, which is less that I've ever paid to Seavision or the company in CA.

My point: if your over 50 and want Rx bifocals, go to someone who knows how to listen and do them in a dive mask. Your optometrists may not know how to make your lenses or be willing to take the time to listen and understand your needs.

Now about those shooting glasses......................