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so wait…. What about measuring it for final inspection? Should the PD “appear more narrow (even after dotting up with prism compensation)?

No way. It’s like if the doctor said “patient can only order three pairs of glasses”. Totally permissible, order as many as the patient would like.

I'm extremely annoyed as well when people completely forget about the wrapped offerings from companies. I'm even more annoyed when the reps can't explain the difference.

Thank you Dan. to make matters even stickier, this is a progressive. So then it should have BI surfaced into it order to keep the progressive bits in the correct place but also undo the BO prism?

Thanks for the advice. I wish I had an IOT account. What do you think of their other lenses along with camber?

I'm glad I'm not the only one.

I've always had more luck with traditional PALs for office instead of the computer PALs. I started using them because I had a lot of patients with three monitors side by side. I use the shortest...

Forgive me, I rarely deal with this and so I've forgotten the rules.

I have a high wrap frame and the PD appears to be very narrow when measured straight on. From what I have seen on this forum...

One odd thing i've found is that the mystyle will come in on +8.00 BC for plus lenses. They are not made in the US and thus we can't request a BC. The Lifestyle seems just right and I think it has a...

How would Hoya factor into this?

could you enlighten us as to what the main differences are? Btw, times like this I wish the lens guru site was still up

yes yes, there are two discussions happening. So yes, it would be MY responsibility to ask for a correct PD based on the rules laid out in Systems. It’s then the lab’s responsibility to make that PD...

Okay hold on.

So, in the case of a complete job, in order for it to come out with the correct PDs you need to compensate before blocking them, correct?

yessss...,. but if I order a 30/30 pd with a 10 BO prism on both sides, and the lab DOES NOT do the compensation calculations, then on final inspection the PD will be incorrect. Hence, it is the lab...

no, the lab should do this because if they don't then it will not pass final inspection since the PDs or segs will be wrong.

And it should be compensated using the same formula? 0.33 times the prismatic power in the opposite direction of the base?

Heyyyyy!!! thank you! where did this image come from btw?

So the first one with the ring actually fits better that the slanted one pictured. Also, the Laramy K video does not mention the machine having any control over the angle of the shelf.

I have two jobs. One has a direct 90 degree step around the lens. The other one was slanted. I wanted to explain to the lab what I wanted but I realized I lacked the vocabulary for it.

The first...

Yes, there are things called rouge that you need to buy. I would google what to use for a polish like you want. the wheels last a long time, I would replace once they look really worn out

ahhhh. Very interesting. Is there anything that mentions whether one is better (even if just marginally) than the other? Also, is there any chart that says something to the effect of "if you deviate...

Yes, I reference this often and it is where I pulled the ellipse image from. I think what I am looking for is the basis of Ostwalt's work and how it relates to Wollaston's. In this article it just...

https://www.homedepot.com/p/VEVOR-Corded-Bench-Buffer-Polisher-8-in-350-Watt-3-4HP-3600-RPM-Benchtop-Lathe-Polishing-for-Jewelry-Wood-Silver-Amber-Metal-YCPGJMC8110VWC39IV1/329400047?source=shoppingad...

From the enigma post
"The lower (Ostwalt) branch of Tscherning's ellipse serves as the basis for modern "best form" spectacle lenses. Both branches can eliminate oblique astigmatism, but Wollaston's...

AN ENIGMA

man! here's something interesting from that post

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