Availability of High Index Transition Lenses !!!

[a1vo]

Just wondering why the highest index of transition/photochromatic lenses is still 1.67?

Limitation is on technical issue(s) or "political" issue(s)?


If they are available in 1.70 or 1.74, please share the info with all of us. Thanks.

[Fezz]

Google is your friend!

http://www.seikoeyewear.com/product.cfm?prodID=202

http://union-optic.com/page/default....6&la=1&ctID=47

[a1vo]

Thanks my friend (oh, does that means Google or Fezz)!!

The 2nd link (http://union-optic.com/page/default....6&la=1&ctID=47) takes me to Europe (Germany?).
Now, I only need to find if my lab can order Seiko lens or I need to open an account with Seiko. haha

[JC1111]

Acculab Of Illinois is a full seiko lab!

acculab.net

[Robert_S]

We can get 1.74 transitions from several labs... but that is in the UK. I'm sure you can get it from somewhere other than Seiko though. For what it's worth, it's a product you will most likely hardly ever use.

[AngeHamm]

They are available as a stock SV lens only. I have a pair with (I think) RF Endura EZ A/R. They're nice.

[MikeAurelius]

It is a "Transitions" issue.

I've talked with a caster, and here's what I've learned:

The caster buys the resin/ingredients from Transitions. Caster casts lenses. Caster packages lenses and "sells" them to Transitions and ships them to Transitions. Transitions does their "magic" on the lenses and sells them back to the caster. Caster then sells the lenses to the lab.

Any lens made with Transitions resin HAS TO BE APPROVED by Transitions. This is the agreement that Transitions makes with all casters before selling the resin.

[Robert_S]

No, you can get them in bifocals or progressives.

[a1vo]

It is a "Transitions" issue.

I've talked with a caster, and here's what I've learned:

The caster buys the resin/ingredients from Transitions. Caster casts lenses. Caster packages lenses and "sells" them to Transitions and ships them to Transitions. Transitions does their "magic" on the lenses and sells them back to the caster. Caster then sells the lenses to the lab.

Any lens made with Transitions resin HAS TO BE APPROVED by Transitions. This is the agreement that Transitions makes with all casters before selling the resin.

So, there are some "licensing" issues involved. Probably Seiko is the only one willing to pay for the license in the US market on 1.74 material.

[a1vo]

found that US Optical (one of the Seiko labs) has "174 transition gray with Zeiss AR" available on their stock lenses list.