Excimer Laser

An ultraviolet laser used in refractive surgery to remove corneal tissue. The excimer laser produces an ultraviolet beam of light which is emitted in pulses. Each pulse removes 1/4000 millimeter of tissue from the surface of the cornea. It would take about 200 pulses from an excimer laser just to cut a human hair in half. The excimer laser has been used in industry since 1971 and has been used in ophthalmic surgery since 1983.

This diagram shows the accrucy
of an Excimer Laser on a human hair.