On Monday, 09-09-2024 at 18:46 Anssi Saari wrote:
> debian-u...@howorth.org.uk writes:
>
> > As a mere bifocal (well vari-focal) wearer can I suggest a different
> > approach. Stop wearing tri-focals or any other variable focus specs for
> > reading a computer screen. Tell them to get a [very cheap] pair of
> > single focus reading glasses made to suit the distance their screen is
> > away.
>
> I don't agree at all. I've used fixed focus glasses before but I find
> close range varifocals a huge upgrade. They're extremely useful for
> monitor work *and also* I can see and read things around me that fall
> outside the extremely narrow focus range of single focus reading
> glasses.
Anssi, thank you for posting your experiences. This technology was suggested to
me but it was explained the left/right sides could be blurry, so I declined to
try them, which is a bit sad, because maybe they would have worked for me.
https://lowcostglasses.co.uk/common-problems-with-varifocal-glasses/
https://www.glassesdirect.co.uk/buying-guides/lens-options/varifocal-lenses-explained/
> I wonder if fixed focus even works for modern large two or
> three monitor setups? I suppose it's fine for a single small screen.
>
I can report that single (large area) focus glasses work exceptionally for me
when using three monitors (I like using 24" or even better 27" HD monitors). As
long as each monitor is still about the distance of my outstretched arm,
creating a semicircle around where I sit. I find it very difficult to use just
one monitor. The great thing about single focused glasses is that I can use
peripheral vision to see all of the screen in focus without needing to turn my
head or move my head up and down. Using single (large area) focus glasses saves
me a lot of head turning that would be required to keep my centre of vision at
the point at which I am reading on the screen.
I so want to try a 65" OLED curved widescreen monitor, but my budget is
multiple second hand 1080p monitors.
I do agree with you, the draw back with single focal glasses is if I am working
with paper that is closer to me than the monitors, or if I am looking at a
whiteboard as in a classroom that is further away from me than my monitors. In
these cases I expect that trifocal or varifocal glasses would be preferred,
though I have yet to use either on a long term basis.
Fortunately my use of paper or laptop screen is rare. I use two or three large
screen displays for my long periods of work. I do use a laptop when travelling
and use reading glasses when doing so, not my computer monitor glasses.
> So, not going back from my close range varifocals. I don't need glasses
> otherwise.
If verifocals work for you, you do not need to do anything else !
Again, thank you for sharing your views and experiences, this does help me. I
would like to try using varifocal glasses for classroom environments, as this
is definitely when my single focus glasses do not quite do the job.
George.
>
>
