During a session held on December 15, 1910 at the Hotel Breslin in New York, National League president Tom Lynch announced to owners that umpires would be required to take what he called a “severe” eye test before the start of the season. As a result of the decree, any arbitrator found to have defective eyesight would not be permitted to work.
To this day, MLB umpires are required to demonstrate 20/20 vision, either with or without corrective lenses.