Screen Ache
When you look at your phone, tablet, computer, TV, etc. screen for so long that you get a headache. Usually happens when you watch small to moderate size videos/ episodes of something that just sucks you in.
Jack: "Oh dude I watched {enter favorite YouTuber's name} on my iPhone for so long that I got a screen ache"
Claire: "That's the worst!"
Claire: "That's the worst!"