[Lex Computer & Tech Group/LCTG] self measuring eyeglass prescriptions

[S Ou]

Hi Steve,
I've just recently had my eyes checked and got a new prescription. And
oddly I have a few minutes to write a response!

The lens measurements were a small part of the eye doctor handled - he
1) inspected the cataracts in each eye and was able to characterize them
and explain my recent vision issues - the one on my left is small but
centered so in bright light with pupils narrowed, the effect of the
cataract is worse than in normal or low light when the pupils are more
dilated and it's a smaller part of the overall light scenario.
2) used a scanner to examine the layers of rods, cones, and other stuff
through the back of my retinas, and confirmed that there was a little
change but otherwise stable from last year's images and the year before.
3) checked for glaucoma and other potential organic issues

What I'm saying is, the eye exam is much more than getting the correct
focal length on your lenses.  Even if you got a set to verify your diopter,
other issues like astigmatism and other adjustments might be better left to
people who went to school for this.  But if there is a kit that does
measure all these parameters, that would be cool. The basic elements of a
prescription are explained here
https://www.perfect-eyeglasses-guide.com/eyeglass-prescription.html

The final straw is this:  when you order online, for example at
https://www.zennioptical.com/  or https://www.39dollarglasses.com/ part of
the ordering process is to upload a photo of your prescription.  By the
way, there is a measurement for inter pupillary distance  (P.D.?) that you
might have to request from your optometrist and might be different from
left to right eye (sometimes they don't get written down).

I am now a firm believer that a good eye doctor who has past years records
and images of your retina is a valuable baseline to have. Plug here for
Winchester Optical (Main St, WInchester) - Dr Deering is thorough and
caring.

Best of luck -- I strongly support doing things for ourselves whenever, but
your eyes are very important.
If you do get a set, that would make a great talk!   In-person double check
of your prescription.



On Sun, May 14, 2023 at 11:14 AM Steve Isenberg <smisenberg at gmail.com>
wrote:

> Gentlepeople,
> I’m thinking of getting a optometrist lens set so I can measure my vision
> and fine tune my eyeglass prescription.
> I’m thinking of the old type, where you wear a frame and the doc inserts
> different lenses, asking is A or B better, etc.
>
> Any thoughts on what I’m thinking?
> Do you know of a lens set I could get for free or low price?
> Have you done or considered doing anything like this yourself?
>
> Thanks,
> -steve
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-- 
S Ou
shukong_at_ourigami.com
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