- Blue eyes have long been associated with movie star good looks, but why they make hearts throb is open to conjecture
- An estimated 17% of the world's population has blue eyes. The color is an illusion created by light refracting in clear eyes
- Stroma Medical has developed a laser system that agitates the pigmentation in irises to reveal the clear blue eyes underneath
- While the company says tests have shown the treatment to be safe, critics say that there may be a risk of developing glaucoma
(CNN)From the piercing blue eyes of Paul Newman to the steely gaze of Daniel Craig, blue eyes have always been a measure of attractiveness.