Search:

Thanks Memoir,
No one from Hoya's Technical Support could give me such great information you did.

What about Prism Imbalance?
As far as I know, they correct the imbalance in Gradal Ind.
How...

I guess it has nothing to do with lens design.

I have got the same complaints from young hyperopes(40-48) who has distant power over +1.00 ,since I encreased the Addition.

As they are used to...

To order Hoyalux ID/FD by Hoyalog.

1 Ordering Conventional PALs or Free-form by Hoyalog (Mets, either cut or uncut), does the programme itself compensate the prism imbalance incase of a big...

Many years ago, one customer asked me to check his PD. so that he could order eyeglasses from internet. He was very demanding and really wanted to have right and left PD separately.

I asked :...

One patient's PD is 60

He got 2 pairs of eyeglasses

1 size 52/18 PD R 28 L 32
2 size 54/16 PD R 29 L 31

If PD varies upon size of the nosebridge and where the frames are sitting.
How...