a laser with ionized argon as the active medium and with a beam in the blue and green visible light spectrum; used for photocoagulation.
Type: Term Definitions: 1. laser used for ophthalmic procedures, including retinal photocoagulation and trabeculoplasty, consisting of photons in the blue (488 nm) or green (514 nm) spectrum.
Argon laser: A laser with ionized argon as the active medium. Argon lasers are used for photocoagulation in ophthalmology.