It could be argued that efficient vision is more important in officials than in athletes, as evidenced by the discussion on twitter of the disallowed goal in the BlackHawks-Wings game 7. A study of environmental effects on referrees shows that active referees have more difficulty making decisions when they are overheated. Sideline officials, however are more affected when they are in very cold conditions. If you are an official we can improve your vision as well.
Dr. Michael Nelson