On Wed, Dec 24, 2025 at 10:05:01AM +1000, onefang wrote:
> 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.

because Americans can't see as far?