I am starting to see signs of carpal tunnel syndrome on my right hand whenever I use a regular computer mouse.
After some research, the trackball seems most appropriate to alleviate the wrist pains. The problem is that there are 2 main versions:
Which is better for avoiding wrist pains? The "Marble" versions seems like it still uses some wrist action to move the index and middle fingers over the trackball whereas by the "Wheel" the wrist remains completely stationary and only the thumb moves around.