At the age of 25 I started getting strange persistent headaches every now and then. I thought it was because I forgot to keep my coffee addiction up on the weekends but it didn't seem to completely explain it. I even got proper migraines with aura (partial loss of sight/feel) sometimes.
A couple of years ago, my friend who is an optician convinced me to let her examine me. She came to the conclusion that I'm extremely far-sighted and has some kind of other issue causing things to be blurry, so my eye-muscles were basically working hard to compensate every time I opened my eyes, and worked in exhausting overdrive whenever I read things closely, such as on a screen.
Solution: Rika became a person who wears glasses fulltime and who wears stronger reading glasses whenever they are at the computer or whenever they think they will stare at their phone or a book for longer times. Their reading glasses are +2 or +2.5 iirc depending on if they're at work (slightly closer to the screen) or at home (slightly further).
I'm kind of cute in glasses so it's fine. But I do miss being able to easily hug/kiss others without the glasses being in the way ;; that's srsly the biggest downside haha. That, and the fact that I see worse in the dark through glasses than with unobscured eyes.