11 january 2021
Turns out it was just spending an immense amount of time in front of a screen, or asleep. Hopefully it hasn't caused irreversible eye damage. From my experience, trying to avoid screens has lessened it.
Which would be easier to deal with: if it was psychosomatic, or an actual eye health problem? I'll ask a doctor whenever I can.
Otherwise, I guess I've been fine. My friends are currently in quarantine, which means I'll get to see them in person in 2 weeks. That makes me immensely happy.