I finally caught up with my co-worker today. He was at Clemson with his son-in-law who does these surgeries (offices at Clemson, Easley, and Greenville, SC) . The lenses are enhanced multi focus lenses, and are made by different companies. The "thing" is having a doctor that can choose the correct one! His wife Bev has had them 3 or 4 years and is very happy.