Do you need glasses? Are you tense (specially in your shoulders/neck)? How's your diet? Do you drink lots of coffee?

You might need special glasses ... blue light emissions i think could be the issue

Perhaps get those special glasses for computer use, supposed to stop the glare & ease eye strain.

That's what an ocular migraine looks like. But usually there are more rainbow colors. I've had them a few times.

There are doctors you should consult for that sort of thing.

you might need glasses, and magnesium rich foods or sups

Sorry to hear.