Doesn't it rely on external cameras to see users hands and use that as the "click" inputs? Seems like that negates usage for ALS cases.
Also, I'm not an ALS expert, but if the only muscular control is in the eyes, then lack of control in the head/neck probably breaks some assumptions about how the vision headset works (just a guess though).
It does not require using one's hands to click, it supports various input hardware (keyboard, mouse, switch, etc.). If someone has control of basically any muscle, it can use a switch input. The Vision Pro also has Dwell Control, activating things by keeping your gaze on it long enough, but I don't know whether it can currently be solely operated using nothing but one's eyes.
