my customer have the prescription below:
R:-13.25/-1.75 * 105
L:-10.25/-1.75 * 85
ADD:+3.00
age:68
VA:6/24
previous lens type: hoya GP
any good suggestion if i want to switch customer to 1.67 and with less distotion?
my customer have the prescription below:
R:-13.25/-1.75 * 105
L:-10.25/-1.75 * 85
ADD:+3.00
age:68
VA:6/24
previous lens type: hoya GP
any good suggestion if i want to switch customer to 1.67 and with less distotion?
I would try a Hoya Summit ECP in the 1.67 or 1.70 index.Originally Posted by kk636
Has the patient worn progressives before? There's going to be a lot of vertical prism at near in this.
I'd go with flat top with slab off after explaining the difficulties with this rx.
I would at least consider Zeiss's Individual, if you can get it. Separate glasses for frequent or extended near tasks may be necessary.
Science is a way of trying not to fool yourself. - Richard P. Feynman
Experience is the hardest teacher. She gives the test before the lesson.
Since he's already worn progressive (Hoya GP) why not keep him in a Hoya product and use the Hoyalux id. in the 1.7 index. I think you'll find that the R lens will be out of range for most progressives, therefore it may be a case where you'll have to see who's lens are available first by checking with your local lab. For sure the zeiss goes that high.
Mike,
I ordered a -13.75 ID two weeks ago and it was a no go- out of range for both 1.67 and 1.70. The Zeiss lens goes up to -16.00 and that's waht was used. They're both very good lenses, but I'm biased towards the slightly higher Abbe of the 1.70 material.
Science is a way of trying not to fool yourself. - Richard P. Feynman
Experience is the hardest teacher. She gives the test before the lesson.
Ah, just as I suspected. The range of many progressives cut out at -10 to -12....it's much worse on the plus side...many wont even go above +8
The Individual goes up to +10. I've read that Rodenstock has a lens for high plus but I don't think it's available in the states. Kudos to Zeiss for making lenses at these powers, especially the high plus, where they must go through pads(?) pretty quick, especially when the edge is 1.5mm (if you're lucky), and really challenging the systems and software designers to make their lenses work at this level.
Science is a way of trying not to fool yourself. - Richard P. Feynman
Experience is the hardest teacher. She gives the test before the lesson.
Here in Europe Shamir Autograph 1.74 is available from -18.00 to +13.50. I
http://www.shamir.co.il/products_1.asp
Probably won't see it here in the states due to our impact resistance regulations. :(
It seems that PALs and AR coatings are more popular in Europe, which might also explain why we get some of the latest technology years after its introduction to the world market. However, it might be interesting to note that in the US, polarized lens are more than 8% of the total market, and only about 1% in Europe.
Science is a way of trying not to fool yourself. - Richard P. Feynman
Experience is the hardest teacher. She gives the test before the lesson.
Lets hope that Drivewear will change that. An other interesting fact is the total failure of poly and trivex in Europe or are the impact resistance regulations the couse of the succes in the US?
If you don't want them to have distortion, don't use 1.67.
My Rx is similar, and I've got some Tokai progressives in 1.70 index ordered. I'm wearing Hoya ECP in 1.70 now, but my Rx edged over the limit this time.
DragonlensmanWV N.A.O.L.
"There is nothing patriotic about hating your government or pretending you can hate your government but love your country."
Maybe. I can't figure out why polarization is so unpopular to start with. Maybe it's the convenience of photochromics, or are most folks using dyed plastic and tinted or coated glass?
That's probably the reason. CR39 with a 1mm center is going to be lighter in weight than poly or trivex with a 1.5mm center, at least in the lower powers. Even glass with a 1.0mm center in a -.50D is about the same weight as 2mm CR39, and is actually lighter in weight with planos.An other interesting fact is the total failure of poly and trivex in Europe or are the impact resistance regulations the couse of the succes in the US?
Science is a way of trying not to fool yourself. - Richard P. Feynman
Experience is the hardest teacher. She gives the test before the lesson.
Most people use tinted plastic and often with an HMC
I apologize for my ignorance, but what is a HMC?
Thanks!
Originally Posted by NewTop
Most people use tinted plastic and often with an HMC
I apologize for my ignorance, but what is a HMC?
HMC = Hard Multi Coated
:)Vx.Panamic 1.74
:)Vx. Physio 1.74
:)iD lifestlye 1.67
You think like me .. I would pick the 1.74 Panamic
Fleming
Ya gota tell me ... what did you finally go with and better yet how were the results?
Fleming
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