I think there is some truth to the article, however, there is a lot of variability in terms of personality between one retina surgeon and the other. Some do have the high strung and compulsive nature discussed, but others are laid back and reasonable.
I have to admit that despite all that, there is quite a difference between the anterior seg and retina types as the article alluded to.
While certain personality types gravitate to the field, after years of practicing retina, I think some characteristics are acquired and then re-enforced given the nature of the specialty.