I hope this is the right ng to post this kind of question to. Of course
I will talk to a local optometrist before buying also, this is just to
prepare me before i do so.

I have a few questions about Transitions(C) lenses.

It seems that the same mark is used by Essilor and Transitions, Inc,
with no clear indications on either website what the relationship
between them is and whether they are absolutely the same, or whether one
is a superior technology (and why).

Also, whether there would be any disadvantages in getting Transitions in
conjunction with Varilux variable focal lenses (or similar technologies)
etc?

Further, I read somewhere that Transitions don't work well in warm
climates (I'm in Singapore, so it's always warm here) and that they
don't work well for driving (the UV tint in car winshield materials
apparently means that the auto-tinting doesn't kick in).

I'd like to get a clear (sic!) idea of what I can expect before
committing to buying lenses with Transitions (or similar)..

If it matters: I work with computers (mostly LCD screens these days)
which I stare into most day long. If this is something that would
influence my selection of lenses, I would like to know that too.

Pointers to good FAQs would be appreciated also.

M