A doctor has come up with a technique to permanently change brown eyes into blue ones. Dr. Gregg Homer at Stroma Medical in California announced that he had come up with a laser procedure that removes the brown pigment, known as melanin, in the iris. Once removed, the blue color underneath is revealed, giving the person blue eyes. Homer said the procedure takes about 20 seconds. The change is irreversible because, once removed, the melanin cannot grow back. However there may be certain long-term risks, so the entire procedure is under review before it can be given to the public. (Source)