I have received my new Rx (unchanged) with Zeiss Individual 2. It's very clear but no real difference from my Toledo Optical IOT designed Lenses. In fact, computer and near are much better with the IOT design. Zeiss needs to add a short corridor
I have received my new Rx (unchanged) with Zeiss Individual 2. It's very clear but no real difference from my Toledo Optical IOT designed Lenses. In fact, computer and near are much better with the IOT design. Zeiss needs to add a short corridor
Sounds like you should have ordered the intermediate version of the new Individual 2 (2I); or the 2N option if needed. I have a few orders out but haven't dispensed the Zeiss 2 lens yet so I can't say I have any true feedback on the varying corridors offered.
How much is Zeiss compared to IOT? 1/2 or less the cost I am guessing.
It's not half- about 2/3 the cost.Originally Posted by Craig
ZEISS Individual has a variable corridor length based on the fitting height, down to a height of 13 mm. You can also order the Individual 2N (Near), which has a slightly shorter corridor length than the standard design, if you prefer a higher near zone. Or you could go with Progressive Choice Plus, which allows you to specify the corridor length.Zeiss needs to add a short corridor
Best regards,
Darryl
Darryl J. Meister, ABOM
Four (plus one) questions please.
1. At what fitting point height (including frame shape and near decentration) does the variable corridor Individual 2 stop increasing in length?
2. The Choice+ and INDV 2 both have variable corridors- any other differences besides the INDV 2's 2N and 2I PAL designs options?
3. Is the fundamental PAL design the same between the Choice and the INDV2 Balanced?
4. The Choice has 13, 15, 17, 19 and 21mm selectable fitting heights. I wear an Auto 2 fixed 18. The Shamir says the corridor length is 13mm, defined as the distance from the fitting point to 100% of the add power. I'm going to trial the Choice in a fixed length. Which length should I choose that would come as close as possible to the Auto 2 18' corridor length?
5. I understand C.O.R.E. Does it also take into account the prismatic image displacement with higher plus and minus lenses?
Last edited by Robert Martellaro; 06-20-2014 at 01:12 PM.
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.
Hi Robert,
At 19 mm and higher, the corridor length remains the same. The near reference point distance is 18 mm and the corridor length to 85% of the add power is 14 mm.1. At what fitting point height (including frame shape and near decentration) does the variable corridor Individual 2 stop increasing in length?
Individual 2 offers the two additional lens design options, customization for the position of wear, more precise calculation of the center of rotation distance, and personalized engravings.2. The Choice+ and INDV 2 both have variable corridors- any other differences besides the INDV 2's 2N and 2I PAL designs options?
The basic lens design "fingerprint" or distribution of power and astigmatism is essentially the same.3. Is the fundamental PAL design the same between the Choice and the INDV2 Balanced?
Choice 17 would probably provide you with the closest corridor length. However, the design geometry differs between the two lenses, so you will not necessarily experience the same visual experience, even if you match corridor lengths.4. I wear an Auto 2 fixed 18. The Shamir says the corridor length is 13mm... I'm going to trial the Choice... Which length should I choose
CORE technology calculates the estimated center of ocular rotation based upon the prescription. So, it compensates for the intersection of the line of sight with the lens as a function of CoR as a function of Rx. The standard ZEISS optical optimization process attempts to preserve the prismatic effects as a function of prescription.5. I understand C.O.R.E. Does it also take into account the prismatic image displacement with higher plus and minus lenses?
Best regards,
Darryl
Darryl J. Meister, ABOM
Thanks Darryl. You da man!
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.
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