https://chroniclingamerica.loc.gov/lccn/sn82014189/1918-05-14/ed-1/seq-1/

Two Tulsa, OK dentists are arrested for providing drugs to help men avoid enlistment by making their eyes sore. Their operation was national according to the federal officers. 

Source: "Drug Furnished Enlisted Men to Make Eyes Sore," The Daily Alaskan, Skagway, Alaska, May 13, 1918. Page 1, Column 3.