Curved lenses on dive masks

[Diver Dan 28]

Does anyone know if a manufacturer ever tried to make a curved lens on a mask. I was just sittin here thinking about how cool it'd be. My Sherwood Rona is awesome though. Does anyone know if it be better than flat, or can it even be done because of the temper of the glass? Wonder if it make objects look diffrent?
I posted this just to see and start a conversation.

 

[dumpsterDiver]

Amazon.com : Aqua Sphere Sphera Swim Mask (Black skirt/Black Frame) : Swimming Goggles : Sports & Outdoors

They suck for visual distortion on the periphery

 

[decompression]

Hydroptix........still see a few now and then

Scuba Masks by HydroOptix -- Home

I just googled.....they're still around.

 

[tursiops]

The physics are simple: a curved glass/plastic separating air and water acts like a lens, so changes the focal length of your vision. The HydroOptix acted like a -4.5 diopter pair of glasses....so if your vision was nearsighted, not a little but a fair bit, then the HydroOptix would give you an underwater correction. Nice. But if you had 20/20 vision, you needed to wear contact to make your eyes bad so the mask could correct that badness. Neat, huh? Although the product still seems to be around, the only HydroOptix mask I've ever seen was the one they sent me for free (as a keyman item), that I finally sold.

 

[Diver Dan 28]

That's sorta what I was thinking. I'd be cool if they could make one that would correct for the
distortion, yet I'm sure It'd be big and bulky, and useless. So it'd take the cool factor out completely.