On Sun, Sep 8, 2024 at 7:07 PM jeremy ardley <jeremy.ard...@gmail.com> wrote: > > > > On 9/9/24 06:23, George at Clug wrote: > > If I required glasses for reading the car's speedometer, then I would > > definitely be using a bifocal pair of glasses. So far I can easily read > > the instrument panel, and since most of the time we spend focusing on > > the traffic about us, a quick glance now and then to confirm the car's > > speed is under or at the current speed limit, I am able to drive for > > many hours. > > The need for glasses increases with lower the light levels because the > pupil expands at low light and lense defects become much more obvious. > > This is probably the reason I use black text on white background for > most of my computer work. White or green text on black is generally > harder to focus. Many of the 'dark' themes in editors are almost > unusable for me. > > A second issue mostly unrelated to computer screens is astigmatism. I > was quite surprised when I started using 'driving' glasses about how > much clearer the road became. At night it is not really safe to drive > without them. The downside is that you can't see the instruments too well.
What are these driving glasses? I can no longer drive at night and would love to know about them.