What conditions may prevent a person from being able to use the EyeMax?
Continuous, uncontrolled head movement can make EyeMax operation difficult, as it may not allow the user’s eyes to focus on one spot for a long enough period to activate the desired object. Those with nystagmus may also have difficulty operating an eye gaze system. This is a constantly involuntary horizontal, vertical, or rotary movement of the eyeballs. It may lead to the inability of users to fix their gaze long enough to make selections.
