by Peter Kuempel
(Boulder, Colorado, USA)
Q: Does anybody produce a trifocal lens, in plastic, transition type, with the middle section of the trifocal being 10 mm, not 7-8?
A: Hello Peter
The standard dimension of the middle and close vision part together is 28 mm. From this , the 8 mm is the middle section.
Modifying this means to ask for a custom made lens, which I think is hard to find and expensive.
I personally don't know which company makes custom made lenses, I think is hard to change the standard dimensions, but instead, I think you will find this article interesting and maybe you can find here what you are looking for. Look for the "occupational trifocal lenses".
Hope this helps,
Click here to post comments
Join in and write your own page! It's easy to do. How? Simply click here to return to FAQ.
Was this information useful?
1. Like Perfect-Eyeglasses-Guide.com on Facebook.
2. Share this article with your friends: