In USC’s lecture halls, labs and executive offices, Dr. Carmen A. Puliafito was a towering figure. The dean of the Keck School of Medicine was a renowned eye surgeon whose skill in the operating room was matched by a gift for attracting money and talent to the university. There was another side to the Harvard-educated physician. During his tenure as dean, Puliafito kept company with a circle of criminals and drug users who said he used methamphetamine and other drugs with them, a Los Angeles Times investigation found. Puliafito, 66, and these much younger acquaintances captured their exploits in photos...