I work in IT and spend personal time at PCs too and I've got short sighed over the years. Can't prove it's the PC screen, and I'm also diabetic but I honestly think it's at least partially due to looking at a monitor 2 feet away that's damaged my vision
Same. Ever since I got into multiplayer gaming which was with a PS3 5 years ago, I sat by my 40" TV quite close and I am now short sited.