The word ‘laser’ stands for “light amplification by stimulated emission of radiation”. It is a special kind of light that is of a single frequency (wavelength) and highly synchronised (coherent). This allows lasers to be precisely focused and attain tremendous energy levels.

The mention of lasers being a form of radiation leads some to question whether they can cause cancer. This is not so because lasers are not related to either X-rays or radioactive materials. In fact, all kinds of light are considered as forms of radiation.

Excimer Lasers
Femtosecond Lasers – All-Laser LASIK