My eyes get red throughout the day. How to stop it?

There are eyedrops for contact wearers and contacts that allow more air through. Worked for me.

I’ve never heard of “dry environment” as a particular reason for eye irritation or red-eye in general. Are you certain that there aren’t additional causes, such as the ambient air (caustic fumes, perhaps, or other chemical causes) or lighting?

Do you work with a screen? Lowering it allows your eyes to blink more naturally. Also, you might want to set a timer reminding you to take short breaks that will let your eyes focus on other things.