Not really an issue for me. Almost all of my work can be done through the terminal and through Emacs. For maximum visibility, I run a full screen terminals with large font and good contrast. I really wouldn't have it any other way, as I'm not a fan of GUIs. Of course, I still retain the ability to spin up a GUI if I am forced to do so. The only effect the screen has is that it does not entice me to watch videos (which is a great feature for a work machine).