A head-mounted display apparatus may include a left display subsystem and a right display subsystem, and the left and right display subsystems may each have a display screen and a lens configured to focus light from the display screen at an exit pupil of the head-mounted display apparatus. The head-mounted display system may also include an actuation subsystem configured to change relative positioning of the left and right display subsystems based on received data indicative of an inter-pupillary distance of a user. Various other methods, systems, and devices are also disclosed.
