I never did anything like that. Just was slack enough
about getting another eye check that I got quite a
dramatic improvement when I did get new ones.
I have just done that again, being well aware that
I couldn’t read the text on the smallest street name
signs until I was closer than I used to be able to read
them and have been having difficulty reading the
numbers on houses from the car. When the license
renewal showed up a couple of weeks ago, had to
get off my arse to get new glasses from HongKong
so I can pass the eye test when they do that for the
license renewal. It will be a bit tight if they turn up
I was initially told that I should wear mine while
reading, but none of the later ophthalmologists
thought that that original instruction made any
sense. Bet yours was just another unscientific
urban myth with no scientific basis for it.
You said earlier that your 'TV glasses' are really your distance vision pair.
What happens to the double vision you were complaining of originally if you
When I put 'reglazing glasses' into Google, it very obligingly prompted me
with 'reglazing glasses specsavers'
The first hit says: "We offer single vision reglazing from £39 ..."
However, if you just search on 'reglazing glasses' you will find a plethora
of companies offering postal reglazing services. Is Specsavers the only
opticians near you? We must have about half a dozen in town ...
From what you said about your current frames obscuring your vision, though,
they are obviously unfit for purpose - possibly they are much too narrow to
suit your face? So why would you want to have them reglazed anyway?
I can't see the frames of my glasses - which came from Specsavers, as it
happens and weren't particularly expensive - unless I try to look over the
top for some strange reason and they most definitely don't obstruct my
Yes. Now try getting by the sales drone in the shop front. The other
issue is that they do not voluntarily give the inter-pupillary distance.
I know this can be found with a rule and mirror but seems a bit selfish
for what purports to be a free NH funded test.
No. Convenient for parking.
Metal framed so not massive. A quick test shows a vertical bar at about
60 deg. Peripheral goes round to 90+ and more for a light source. The
answer is to learn to turn my head rather than just swivelling the
On Tue, 29 Dec 2015 18:27:40 +0000, Tim Lamb wrote:
That's because you don't wear 'em enoough to get used to 'em. B-)
I work outside in all weathers, do DIY with masks, wear eardefending
headphones, not often a bone dome as I hate the things. Don't find
glasses a problem at all. But I've been wearing them for about 50
years, have to walk into things if I don't...
There doesn't appear to be any focus feed back loop. If there was no
one would need glasses for simple focus problems. The eyes adjust the
lens to what should be correct but the shape of the eyeball means it
Presbyopia happens you can't do anything about it. Right PITA it is
too, my natural in focus range is now only about 1" deep around 6"
from my eyes.
I got away with that sort of age glasses from my 20's to mid forties
or so. Since then presbyopia has slowly crept in and the single
vision lenses have become varifocals and need changing about every
year. I should imagine that my lenes will become rock hard fairly
soon and the near prescription will stop changing. The normal, far,
presciption hasn't changed over the creeping onset of prebyopia.
On my sample of Specsavers (Hexham) I won't go there again, managed
to mess up the test some how, so one lens was incorrect, took far to
much effort to geta re-test and new lens, even now I'm not overly
happy about the glasses being correct. I used to go to a private
opticians but they are ina town I don't frequent so it would be
special trips (50 miles round). The rest of the family have been
using Vision Express (Carlisle) with good results so I've just been
to them. They'd rather sell you a new frame (that's where their
profit is) but will re-glaze old frames provided they are in good
condition and you have a suitable spare pair (if you *have* wear
specs to function properly).
On Fri, 1 Jan 2016 12:26:30 +0000, Tim Lamb wrote:
The distance and range my eyes can focus at without artifical aid.
Essentially I'm now fixed focus at about 6" at lower light levels,
high levels of light do make the range a bit wider as the iris stops
Presbyopia is hardening of the lens with age, this stops the lens
muscles from adjusting the lens shape and thus focus point.
Think that is myopia - sort sight? Presbyobia is long sight where the rest
focus position of the eye is beyond infinity.
At least if you are short sighted you can remove your specs to read. ;-)
I've got presbyobia and astigmatism so have needed correction for
*When cheese gets its picture taken, what does it say? *
Dave Plowman firstname.lastname@example.org London SW
I find point light sources in low light stretch out into "lines" aligned
with the angle of my astigmatism for each eye (which in my case yields a
crossover effect). What is odd (but not uncommon I suspect) is that the
"line" is not a smooth bright central point with "ends" of diminishing
brightness which fade to dark, but is has instead some granularity to
it, so you see the line punctuated by more clearly defined (but dimmer)
copies of the main image of the light source diminishing toward the ends.
I suppose rimless might be better but these are not John Lennon mini
portholes or the current vogue for black plastic fencing.
Maybe my eyes are set back abnormally or have better peripheral
performance than necessary. I have only tried them for driving and found
slip roads/T junctions a bit unnerving.
On Thu, 31 Dec 2015 15:59:12 +0000, Tim Lamb wrote:
"Fashion" has far too much influence on the availabillty of frames
that actually let you see properly. A year or so back "fashion" meant
that the only frames about were slits so like looking through a
letter box. Larger rounder frames are about these days but even the
largest ares still to small IMHO. Bring back what you could get in
the 70's, depending on your prescription getting the the lens from
the blank could be quite a squeeze. Blanks are what 2 1/2" dia?
Things that affect your vision need getting used to, so need to be
worn most of the time. It's not only the shape of the world that
changes (not much at the lower powers) but also how one move ones
whole head to get the best vision. This includes "moving" the frame
out of the way.
That would be about correct and is why its really bad when some idiot
puts the lenses in 90 degrees out.
I don't think TNP has a clue from his claim that what I said was wrong.
I have astigmatism of about 4 dioptres so i know exactly what its like.
I think it was Andy's use of the word "prismatic" which confused things.
While one can have prismatic lenses, they are not typically used for
correcting astigmatism. (normally specified as a combination of a main
lens speherical power, and then a separate cylindrical power along with
its associated angle).
Prismatic shifts can be used shift the whole image up / down / left /
right which is separate from any astigmatism correction. I learnt a long
time ago never to try on my Mother's specs which include prismatic
corrections, unless you want headache in a hurry! (she has needed them
to correct double vision suffered following a fractured her skull in her
A lot of people never seem to have heard of astigmatism, let alone know what
I used to describe it as flat eyeballs and, when my astigmatism was very bad
about 20 years ago, used to hand them of my glasses and tell them to look
through the right lens at the clock, if there was one, whilst rotating the
glasses through 90 degrees.
Their reactions were usually quite interesting ...
Most would know that a lens is normally like a slice of a sphere. In the
case of astigmatism, think more of an egg, or rugby ball. So it has a
different power according to axis. Specs to correct this do more or less
However, a rigid contact lens corrects the astigmatism easily, as it
becomes effectively part of the cornea. If all the astigmatism is on the
front of the cornea. A soft lens forms to the cornea, so needs optics to
correct the astigmatism.
*What do little birdies see when they get knocked unconscious? *
Dave Plowman email@example.com London SW
The way it was explained to me by an optician was that, where the hard lens
diverges from the curvature of the cornea, fluid builds up in the gaps and it
is these wedges of fluid, which act as prisms, which correct the errors
caused by the distorted cornea.
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