Comparing Trivex with 1.56 index

dimanche 20 septembre 2015

I need to compare the 2 materials. What I think I know so far is that Trivex is more difficult to work with, harder on finishing equipment, but more durable. 1.56 index is easier to finish, but seems to be available in a more impact resistant version than the old Ormex (essilor) version?

1.56 seems to have better ABBE value than Trivex, and is quite a bit cheaper.

Trivex is 100% UV protected by absorption while 1.56 is somewhat UV protected and is now available with infused filter that takes out all UV + some visible blue (Hivex UV++? by Conant)

Saw this last version yesterday at Vision Expo. Is somewhat yellow, no where near as yellow as Blue Tech

Soooooo, here goes:

1. correct any errors above please

2. are there any other negatives lurking out there for either material?

3. any other positives for either?

4. are either materials environmentally safe (recyclable without too much trouble, lenses, pieces and swarf, and is machining both of them safe)?

5. any other comments will be appreciated.
Comparing Trivex with 1.56 index

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