As others have said, you can add blue light filter either based on app or monitor configs.

If you were eyeglasses, it's worthwhile to pay an extra bit - usually on the order of $50-$100 - to get a blue light filter built directly into your glasses.

Further, my optometrist specifically recommended that I use slightly underpowered prescription. I'm at about 90% of what my glasses prescription could be but he tells me that this means my eyes will strain less. It has seemed to work for me since after a few years of having to increase prescription every 1.5 years or so, it's starting to slow down. Could be anecdotal or caused by aging but something to bring up with your own optometrist if you have one.