"Homer says it is possible because even brown-eyed people have blue eyes underneath the brown layer of pigment. "We use a laser, and it's tuned to a specific frequency to remove the pigment from the surface of the iris," Homer tells KTLA. The procedure takes about 20 seconds. When laser energy is absorbed by the eye's brown pigment, Homer says the pigment tissue changes and then the body sheds the altered tissue, changing brown eyes to blue within two to three weeks. The brown tissue never regenerates. Homer says tests have shown no signs of tissue damage. He still has another year of research to complete on the procedure. Researchers believe the procedure will be available outside the United States in 18 months, and in the U.S. in three years. It will cost about $5,000."