News for hackers. Stuff that matters.

A comment on Ask HN: How do you prevent eyestrain with daily computer use?. Parent comment

Re:Ask HN: How do you prevent eyestrain with daily computer ... by bzbz on Monday December 14, 2020 @12:57PM (#25420748)
How do you calculate this? Is it based on your previous prescription somehow, or does it require another optometrist appointment?
[ Parent | on HN ]
Re:Ask HN: How do you prevent eyestrain with daily computer ... by ivank on Monday December 14, 2020 @10:26PM (#25426614)
Just add diopters to the SPH (sphere) portion of your prescription, there is a formula 1/diopters to get your desired focal plane: +1 for 1 meter away, +1.25 for 0.8 meters, etc
[ Parent | on HN ]