Are the glasses sharp at *any* mid distance, regardless of the
position in the lens?
-- Chuck Knight
P.S. Why did you change lens type? From your description, it sounds
like the Varilux worked well for you.
On Fri, Dec 25, 2009 at 5:23 PM, highstream <[email protected]> wrote:
> I recently opted for a pair of Shamir Autograph II to fit in a 33 mm
> (B) frame, after years of using Varilux Comforts (CR39) in a 31 mm
> (B) frame. Between the prescription, opticians and lab, it took two
> eye exams, two fittings and three pairs of lenses before they got
> everything right, at least per the numbers. While there are things
> much to like about these lenses, there is one overriding problem. The
> area that falls in 'mid distance' is blurry. That's from about 20"
> out to about at least 5 feet, getting worse as it goes out. That
> includes practical vision areas like the computer screen (33-36") and
> viewing titles in the library stacks. Just the sort of 'gap' that
> creates an everyday problem. It was even worse at first, going well
> into normal reading distance (15-18"),* but the optician ended up
> leaving aside the fit and pulling the nose pads back so the fame sits
> directly on my nose and thus reading area is more accessible. This
> has all come as a surprise, because this wasn't a problem with the
> previous Comforts (or earlier Shamirs misfitted at 21 mm). The
> optician's solution is computer glasses. I wonder...
>
> My first question is: Is this problem primarily a function of the
> change of prescription (my eyes) or more of the nature of the Shamir
> lens relative to this frame's vertical? The Shamir requires a minimum
> 19mm fit, mine being fit at 19.5mm. Would I have been better off with
> something requiring a shorter fit? When I initially mentioned the
> Autograph IIs, the shop suggested the Zeiss individual, which requires
> an 18mm minimum (they had done Autographs, but this was their first
> pair of IIs, and it required using a different lab than they normally
> use and prefer). Thanks.
>
> Rx (for Comforts):
> OD +0.25 -0.75 100 +2.00
> OS +0.50 -1.50 90 +2.00
>
> Current Rx (for Autograph II):
> OD +0.25 -0.75 90 +2.25
> OS +0.50 -1.00 100 +2.25
>
>
> * The main reason for the follow up eye exam was that the original
> prescription set up a reading distance of a foot, really 9", which
> this shop considers normal. They do not recognize how close a foot
> actually is, and how relatively unusual it is for anyone short of
> thick lenses to hold material that close.
>
> --
> Check us out at the oft-updated http://glassyeyes.blogspot.com!
>
> You received this message because you are subscribed to the Google Groups
> "GlassyEyes" group.
> To post to this group, send email to [email protected]
> To unsubscribe from this group, send email to
> [email protected]
> For more options, visit this group at
> http://groups.google.com/group/glassyeyes?hl=en
--
Check us out at the oft-updated http://glassyeyes.blogspot.com!
You received this message because you are subscribed to the Google Groups
"GlassyEyes" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/glassyeyes?hl=en
