On 2025-12-23 12:25:44, Kevin Chadwick via Dng wrote:
> (IPS). The doctors said I might have some dry eye as I had perfect vision but it
> was just tiredness and reduced exercise where more breaks and a better lit room
> were helpful.

Ask your eye doctor about the 20 20 20 rule. Well, a rule of thumb
really. It's all about keeping your eyes exercised.

If you are staring at a screen for hours, every 20 minutes look at
something 20 meters away for 20 seconds. In the USA it's 20 feet rather
than meters.

That exercises your eye muscles by changing the focus from nearby screen
to that tree over there, and the birds in it, or whatever.

Also matches up with the other thing you should do if sitting in front of
a computer all day, go for a short walk once an hour. So that could be
get up, walk to one end of the hallway that's at least 20 feet long, walk
to the other end, taking about 20 seconds while you are looking at the
other end, then go back to the computer.