A Dr. Gregg Homer recently developed a laser procedure that eradicates the pigment cells in the iris, making the eye color lighter. Those pigment cells are responsible for brown and hazel eyes- when the pigment is gone, the eye appears more blue. This is the same phenomenon seen in babies with blue eyes which eventually may turn darker. At birth, many of the pigment has not yet formed.
A potential risk of the procedure is the pigment release into the chambers of the eye can cause the pressure to rise inside the eye, a form of glaucoma. Would it be worth it? Time will tell.