Earlier quoted context omitted.
Staring at a phone is not good for your eyes, due to the short distance. A small SE phone for critical/mobile tasks and iPad for reading is a practical combo.
is that true? I mean, that staring at a screen degrades your vision? I haven't read anything convincing on the subject.
https://opto.ca/health-library/the-20-20-20-rule
2018 thread: https://news.ycombinator.com/item?id=16146106