Hi,
I wear bifocals, have for over sixty years, both before andafter the usual
cataract age-related procedure.
A number of years ago an optometrist had a card in hisdisplay containing a
number of flip-up lenses to augmentthe fixed lenses on my bifocals. He said he
sold a lotto plumbers. With the flip lenses up, your two regularlenses. With
the flip lenses down, two different prescriptions.Also works on tower work
where you can't do the trombonereading technique to vary your focus....
Like the cheap flip-up sunglasses, only clear with somenumber of diopters.
There are various strengths available,so it is best to buy in person so you can
judge how muchcorrection you need. But, they are available online, too.
I love mine.
Terry N4TZ
On Monday, February 21, 2022, 02:28:29 PM EST, K9MA <k9ma@sdellington.us>
wrote:
Years ago, when I started using progressive bifocals, it was clear that
they were not good for some activities, including using computers. I
just asked my optometrist for 3 prescriptions: reading, computer
screens, and distance. (The distance glasses are for night driving.)
Since I'm very nearsighted, I have to use prescription glasses.
Originally, the computer glasses were focused at 22 inches, but as
screen resolution has improved, I moved closer, about 16 inches. Any
optometrist who has recently tested your vision can write a prescription
for any distance you choose. You can get single-distance glasses very
cheaply from the discount opticians, if you're not too fussy about the
frames.
73,
Scott K9MA
On 2/18/2022 10:02 AM, Zack Widup wrote:
> The last time I had an eye exam, I asked the optometrist for computer
> glasses. She gave me a prescription that was especially for computer use.
> They focus at the distance from my eyes to a computer screen.
>
> 73, Zack W9SZ
--
Scott K9MA
k9ma@sdellington.us
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