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What is a laser?

The word laser stands for “light amplification by stimulated emission of radiation.” A laser is a concentrated beam of light, created when an electric current passes through a special material.

The name and the color of the laser depend on the type of special material that is used:

  • Argon gas — blue-green light
  • Krypton gas — red or yellow light
  • YAG (yttrium-aluminum-garnet) — invisible infrared light
  • Argon fluoride (excimer) — invisible ultraviolet light

Laser surgery in ophthalmology can successfully treat many types of eye diseases.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.