Re. Four times a week for about 25 years
Probably psychosomatic, but still relevant: coffee helps me focus in the morning.
Tea less so but still works. Maybe IOP related, or some other factor?
Someone who knows about eye health could probably tell what is going on.
Seems that when affected, I can see most "normal" details but not very small things, optician reckons slight variation
but unsure how much is due to computer use versus just old age.
Fortunately most of the components now are so small you can't do anything with them by hand anyway, unless changing
a CMOS battery or something.