ampguy
Veteran
I've never been satisfied with fixed prescription glasses, any more than a fixed focus camera lens.
Now we finally have available adjustable lens glasses. Is anyone using them yet? What do you think?
Now we finally have available adjustable lens glasses. Is anyone using them yet? What do you think?
shortstop
Well-known
I'm curious. Work? how much do they cost? I read something, but it seems that they are still at an early stage
sevo
Fokutorendaburando
Nowhere as handy as progressive varifocals (where a shift in head position will focus anywhere you want) - they require you to manually re-focus the glasses (via a knob or slider) for each viewing distance. Heavy and ugly, too - the proposed application is a cheap off-the shelf substitute for progressives, for income groups that cannot afford proper personally adapted glasses.
Whenever electronically re-focusing glasses become a reality (and AF modules and energy sources are downsized so that they fit inside a frame) that would grow into a more serious proposition.
Whenever electronically re-focusing glasses become a reality (and AF modules and energy sources are downsized so that they fit inside a frame) that would grow into a more serious proposition.
ampguy
Veteran
budget, couple of different technologies
budget, couple of different technologies
varifocals aren't widely available in the US yet.
There are only a couple of brands shipping that have wide ranges, one is adlens, which has two technologies, the lower end models (~$30-40) uses screws to separate two lens elements to cover a range of ~ -4.5 to +3 D.
The higher end ones use liquid, but are designed to be adjusted only once, and then remain at a fixed setting.
None that I'm aware of above correct for astigmatism, and the build quality and styling leave a lot to be desired.
budget, couple of different technologies
varifocals aren't widely available in the US yet.
There are only a couple of brands shipping that have wide ranges, one is adlens, which has two technologies, the lower end models (~$30-40) uses screws to separate two lens elements to cover a range of ~ -4.5 to +3 D.
The higher end ones use liquid, but are designed to be adjusted only once, and then remain at a fixed setting.
None that I'm aware of above correct for astigmatism, and the build quality and styling leave a lot to be desired.
1joel1
Well-known
These are awesome, I have heard from target shooting buddies, but rather expensive:
http://superfocus.com/
Joel
http://superfocus.com/
Joel
ampguy
Veteran
I think Superfocus are out of business
I think Superfocus are out of business
Adlens, and eyejusters are around, but the eyejusters only go to -.5
I think Superfocus are out of business
Adlens, and eyejusters are around, but the eyejusters only go to -.5