"ridiculous" or "malpractice". At 1973 Welsh Cataract Symposium, surgeons presented results of negative outcomes from the procedure with actual patients paraded as evidence. In 1974, the American Academy of Ophthalmology (AAO) sponsored a comparative study of phacoemulsification, which found that the procedure was as effective as ICCE. Kelman decided to promote the procedure to the general public and, on February 21, 1975, appeared on The Tonight Show with Johnny Carson. The first International Congress on Phacoemulsification and Cataract Methodology sponsored by Foundation for Ophthalmic Education was held the same year and the procedure began to gain wider acceptance. While many ophthalmologists accepted phacoemulsification and the small incision required as the best method for removing cataracts, they still needed to widen the incision to to insert a replacement artificial intraocular lens (IOL). While Kelman in 1975 began developing IOL that could fit in smaller incisions, this issue was only overcome when Thomas R. Mazzocco invented the silicone IOL in the early 1980s. What became known as the "Mazzocco taco" could be folded and inserted in the same small incision used for phacoemulsification. When the foldable IOL was approved for use by the Food and Drug Administration in 1984, the clear advantage of Kelman's phacoemulsification was fully realized. That same year, the Kelman Satellite Teleconference was presented at the annual AAO conference, allowing the more than 400 in attendance to observe a live broadcast of Kelman performing five procedures. Kelman treated many celebrities including Joe Frazier, Lionel Hampton, Rex Harrison, Ann Miller, Jan Peerce, and William B. Williams. Hedy Lamarr, who Kelman treated in October 1980, said "I was blind for more than seven years. But I'm fine now. Dr. Kelman gave me my sight back. He gave me my eyes." In 1992, The New York Times estimated that Kelman's innovation "shaved $7 billion a year from the nation's hospital bill." At various times in his career, Kelman served as clinical professor of ophthalmology at New York Medical College and as an attending surgeon at the Manhattan Eye, Ear & Throat Hospital and the New York Eye and Ear Infirmary. He published numerous articles, papers, and scientific book chapters, as well as a lay book, Cataracts: What You Must Know About Them, published by Crown Publishers in 1982. Later in his career, he invented a way to create collagen from a patient's skin to avoid allergic reactions. He continued to practice medicine,