Comment by leoc

Those preferred viewing angles from Hill and Kroemer ( http://www.tandfonline.com/doi/abs/10.1080/00140138608967228 ?) seem distinctly low. My uneducated guess is that those results, from people asked to use computer workstations in 1986, probably reflect hunt-and-peck typists' need to move their eyes frequently between keyboard and screen. That leaves you in basically the same situation as a seated touchscreen user or seated pen-and-paper draughtsman, for whom a diagonally sloped work surface is the best compromise between the near-vertical viewing angle of a cinema screen and the need to see your hands while avoiding gorilla arm. (While the dead-level surface of most modern desks is mostly optimised for piling crap on.) https://news.ycombinator.com/item?id=8444990 For touch typing I assume that a more cinema-like viewing angle is better.