Hello,
Headaches and migraines occurring after many hours spent every day in front of your screen may well come from the blue light emitted by the screens, all computer scientists know this. Another simple cause is too high a brightness of your screen, lower it significantly, to the bare minimum, and you will see the eye tension go down within a few days.
The remedy does exist: wearing a pair of glasses with special computer glasses containing the famous blue light filters, counting 100-150 €, and spending this in your company's expenses is entirely credible. If you already wear glasses with diopter, then you will need to renew them, and add the option with the blue light filters for PC screen.
Here are some articles that explain why this problem is real and it is important to preserve the capabilities of your eyes:
https://www.cnet.com/how-to/what-are-blue-light-blocking-glasses/
https://blog.hubspot.com/sales/flux-review