what would be the best lens?

[haliopt]

What would be the best lenses for
+9.50-2.50*098 fitting ht 21.5
+8.00-1.75*084 add +2.75 Progressive

frame 48-21 ed48 depth34

customer wants transistions and hard coat like TD2

I was thinking of ordering Ormex 1.56 Natural

Don't want to go supremacy 1.67 as money is an issue

This guy is not going to be able to maintain a multi ar

anyone know what the abbe is for ormex?


Thanks, Newbie

[optdsn]

I'm not sure that I would use a progressive. High pluses don't seem to work well.

[haliopt]

Customer is a progressive lens wearer

[Jedi]

Rodenstock has two new lenses out the
Multigressiv ILT and the Impression ILT
(ILT stands for Individual lens technology)
Essential they feed info like Rx, VD, PD, Frame dimension, and wrap into a Cray supercomputer, and it show Rodenstock the best possible curves for that patient and creates a custom lense.
Check with you lab for more info.

[Jeff Trail]

YIKES..I think I would try a different combination than a Ormex Natural If I were you, with that RX you are going to end up with a bi-convex cut.. talk about a non adapt..
I think the highest base curve in a 1.60 and lower index is the Kodak 1.60 at 8.50 .. most of the 1.66 it is around 7.50 and lower but the index of refraction does give you some play room where you can actually carry more RX power than base curve and not end up with a bi-convex..
One thing about it, you can get one thing but not both (high index ,or in this case, ormex, mid index with transitions) and get it to work..
When going out of the norm in RX's we tend to have to match just one request or the other but can't fill them all.. If this person has never worn a saddle back lens I do not think it would be worth it to try, most labs on special orders like this where you go beyond the recommended peramiters of the lens makers will not give you a non adapt.. especially something as specific as a bi-convex cut (a lot of labor, special tools and breakage)

Jeff" no quote today, to depressed" Trail

[haliopt]

Thanks Jeff

He was wearing Trans and some kind of mid or high index. It must have been a bi-convex. It looked like a sola lens and I called the sola rep and he said it could of been a panamic with velocity
but again it would be a bi-convex. Gee, sure wish I had put a lens clock to it. I always run into this mess when I do High Pluses.
Thought I learned my lesson 2 yrs ago when the same thing
happened.

Thanks for your comments

Lance

[Jeff Trail]

Did it have laser markings that you found? ...big difference between a SOLA brand and a Varilux brand design :-)..

Sola you have the Percepta, Visuality, solamax, XL and VIP..and access but don't figure it is that for sure :-) ..in transitons in spectralite (mid index) I think the highest curve they have in any of those designs is a 7.75..

BTW Ormex abbe is, I think 42 and spectralite is 46..something real close to that, I'll double check if you want if you just "have to know" for sure..

IF it was a SOLA VIP or XL than you can use a harder design for a substitue going into the higher indexes..ie Proceed, Kodak etc.,etc.

Also might want to check out HOYA's line, had some good results there in bi-convex adaption..but making sure the lab does QUALITY job is very important in any choice you make in any design or material..
Oh we get asked to do miracles sometimes in optics :-)

Jeff "asked enough times for a miracle I should have a donation box at my door" Trail :-)

[bruce]

You can try a Seiko 167 Proceed II short in transitions. You can put a Crizal or Zeiss SET AR on it (email me for prices), depending on the lab. I think the rx is ok up to a +10.00 or so.

Abbe for Ormex - 46


[Edited by Steve]

[Steve Machol]

Thankls for the post Bruce. Just a note that it's usually not a good idea to post wholesale prices on a public forum. I've edited your post accordingly. :)

[chip anderson]

I resisted as long as I could, patient needs a PMMA crescent fused bifocal (properly fitted and managed of course). He'll love your forever.

Chip

Second best: An HGP executive bifocal.

[yzf-r1]

chip anderson said:
I resisted as long as I could

Chip,

I dont think you need to resist giving the contacl lens spin to dispensing problems. I have found it extremely valuable reading your posts especially when you give a contact lens viewpoint to a spectacle query. You are clearly one with a great deal of knowledge on a CL front and it would be a great shame to see you scale down your posting. I am sure most other optiboarders will agree with me on this one.

yahya

[haliopt]

Thanks for the advice about the contacts.

I have never fit hard contacts, the closest hard fitter is 1.5 hrs away. Anyway the guy works in a very dusty place.
What soft lenses would you use? S/V with readers? He could wear them after work.

[chip anderson]

Wouldn't used soft lenses unless the doctor insistied. Vision is so much better on high plus and aphakes especially in a bifocal. One can usually get better than spectacle vision with Old PMMA lenses. Usually near as good with RGP's and not as good as spectalce in soft. Wimp factor is usually not a problem in people with high correction as soon as they find out how well they can see.

Chip

[Robert Martellaro]

I almost had to almost break the Varilux rep's arm as I was twisting it, but I do believe the abbe for Ormex is 37, with a specific gravity in the low 1.20's.

Whatever you decide on the lens design just make sure the client walks out seeing as good or better than the old glasses. Unless there was a notable change in Rx, or the client has other priorities the only way to make sure that happens is to use the exact same lens design and material. You might want to call the client back in to firm up the lens ID. If you can see the markings, identification should be likely. Let us know if you need assistance (older editions of the OLA Progressive identifier books).


Robert

[Optical Plumber]

Essilor doesn't recommend ormex transition progressives for anything higher than +6.00.

They make a Varilux Comfort in 1.6, but not in Transition. They recommend this lens up to +8.00. I ran the 8.50 base through my calc program and here are the back curves and approximate thicknesses (I assumed a 65 PD and a 44 ED):

Sph / Cyl Edge.Thick Center.Thick
R: -.50 / -2.75 1.0 4.9
L: -1.75 / -3.25 1.0 4.5



Terry

[Jerry Thornhill]

Ran an Image Polycarb 8 Base and it will work. Back curve will be
-0.12 on the sph. This way you can get the Transition.

Jerry