Re: Simple Prescription Question


"MsBrainy via MedKB.com" <u33689@uwe> wrote in message
news:78dedfeb9dc1a@xxxxxx

Barrie Wilson wrote:

what we need is auto-zoom lenses ... maybe one of these days
nanotechnology
will give us microprocessors embedded in lenses; AI will figure out the
focal distance and trigger changes in refractive power something along the
lines of "Transitions" changing the level of tint ... not in my lifetime I
would not think ... we'll probably just fix the eye
itself instead ...


These have already been invented. They are called progressives. From my
experience they work. Although my Rx is different than yours, I recommend
Zeiss PAL, unless the ODs around here think that it won't be proper for
your
prescription.

I don't think so, MsBrainy ... progressives don't adjust the refractive
power of their segments dynamically based on the wearer's changing focal
point ... what I'm talking about is (very) roughly akin to a camera's
AutoFocus capabilities .. without the mechanical elements, which would be
unwieldy at best ... not knowing enough about optics, nanotechnology, light
valves, molecular array manipulation, optoelectronics, or even ordinary
materials technology, how you would dynamically alter refractive power I
haven't a clue ... it may all be sci-fi ... and it may not. Maybe Mike knows
something about this and can fill us in on the state of play ... There is
some incredible research going on in those areas. again, though, if I had
to guess -- or invest in an optical tech company -- I think I'd bet on the
one that was working on IOL implant technologies ... which I guess is
already a reality in the multifocal domain, no? PALs will be around for a
good many years ...

anyway, I'm glad to know you've had a good outcome with your Zeiss PALs; I
have no idea whether their lenses would be suitable for me or not ... but I
don't think you're contradicting anything offered up by the good ODs
contributing here ... only thing I know is that the Augen Trivex lenses I'm
using now have to be adjusted/remade or replaced with another ...

One note on the Augens : they were supposedly not AR coated but it appears
to me they are ... there is observable reduction in glare from fluorescent
lighting and they are a total bitch to keep clean ...

BW



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