It is commonly accepted that normal computer use will not physically harm humans. While flashing images for epilepsy sufferers is a well-known exception, another can be found in the Hans'gar and Franzok encounter in the Blackrock Foundry.
This encounter is characteristic in that most of the floor area is moveable conveyor belts, filling much of the screen (and, by extension, the field of view) with apparent motion, even though none is felt sitting at the keyboard. In the more queasy of players, this can result in motion sickness, producing dizziness, nausea and maybe even vomiting. Given how crippling this is to raid performance, how are you supposed to handle it?
The Lightwell method
Look deep into my eyes... if you can find them.
Since nausea can arise when you see movement but do not feel it, the most obvious solution is to
look at something on the screen that is not moving. The
user interface (UI) elements, such as
actionbars and
nameplates, are options, although they might be too far into the peripheral field to focus on. Some environmental alternatives include: