Cornea, Lens, and Iris The iris is the colored part of the eye. A circular muscle in the iris controls the amount of light entering the eye through the pupil, the black area in the center of the iris.
Michael is the caddy for 20-year-old phenom golfer Jordan Spieth, who recently made a huge statement on golfâs biggest stage, tying for second place at the 2014 Masters in Augusta, Georgia, with a 5-under par performance for the tournament. Everything was working in the major for Spieth â and for Michael as well.
Michael Greller, a former math teacher, has been Spieth's caddie since 2011. When Jordan Spieth teed off in the opening round of the Singapore Open (Wednesday night here on the east coast) he did so without caddie Michael Greller on the bag. Greller didnât even make the trip to Singapore after apparently suffering an injury to his left ankle.