Didn't read your link but could this explain why programmers get poor eyesite as they frequently focus on close objects (monitors) and thus the three sets of muscles become accustom to focusing on close objects?
Too bad for them. Your eyes are more important.
Keratoconus (from Greek: kerato- horn, cornea; and konos cone), is a degenerative disorder of the eye in which structural changes within the cornea cause it to thin and change to a more conical shape than its normal gradual curve.
Although my doctor said it was not caused by 10+hrs/day in front of a computer, i suspect otherwise. Its a relatively rare condition, and at my current office there are three of us (out of 25) with the condition.
I would like to know, dear HN readers, do you have this condition?