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Have a gentleman with a +12.00 distance and an 8.50 add. Wearing an aspheric lenticular round seg style. Wants to know what other options are available. My lab guru is away for the day so I thought I'd throw this out here. He'd really prefer a flat seg.
Franklin?
Younger has a FT28 and FT35 "Special Adds"; maybe not special enough for you tho as they only come to +8.00.
http://www.aire-o-lite-optical.com/ But they are not aspheric.Quote:
Originally Posted by edKENdance
This looks like a Low Vision Rx, where adds are 2X, 3X, etc adn every X= +4.00. So your +8.50 Add is actually a 2X add.Quote:
Originally Posted by edKENdance
www.eyeassociates.com/PDFs/Low%20Vision%20Eyewear.pdf
With 20 diopters to work with, getting an extra half by vertex adjustment will be easy enough; inevitable, in fact, unless you use the rivet gun technique.Quote:
Originally Posted by TLG
Ditto :smile:Quote:
Originally Posted by chip anderson
We just had a Free-form round seg-bifocal with a backside add in +13.50sph +3.50 cyl with a +3.50 add. The front was spherical, but if you stacked the adds you could do the same with one on front, one on back. You could get to +8.00 in theory by using a bifocal blank vs spherical.
It was an ICE-TECH dual zone and came out very thin in 1.74. It looked amazing, like it was only a +7 or so.
Thanks for all the options. The only one we're right out rejecting is the Franklin.
/sorry Jacqui :)
First things first is getting this guy into the right frame. He's interested in using his own. I'll have to see if the nose cheese is holding it together.
Attachment 8598
Here's the +11.50 with the 8.50 Add. 350 on the front seg and 5 on the back in a 1.67 blended. 4.9 at thickest point on the back bubble.
Nice.Quote:
Originally Posted by edKENdance
I'm getting dizzy counting all of the optical centers (four)!
Did you start with a 1.67 ST lenticular? I didn't know that was an option. The back was surfaced on a free-form generator, creating the power curve and the round seg? What are the front and back curves, and are they aspheric or optimized in any way? Most importantly, how is your client getting along with them?
Heh! Front curve is an 8 base. I didn't clock the back. I'm uncertain of the rest but as far as he's concerned his vision was noticeably better from the first second he put them on.Quote:
Originally Posted by Robert Martellaro
So how far away is he focusing at near?
What a great job btw.
New slogan for your place-- "We do the ridiculous. The impossible takes one more week."
About 6-8 inches. His best corrected is 20/100. Oddly enough his hobby is making telescope lenses....by hand!Quote:
Originally Posted by Uncle Fester