Laser used in sealing blood vessels and destroying specific lesions.
A gas-produced light (in the blue and green visible light spectrum) with a wavelength spectrum of 488 nm to 633 nm,. which coagulates tissues, is used in photodynamic therapy, and can be absorbed by oxyhemoglobin in blood vessels. Argon lasers have been used to treat skin lesions, bleeding ulcers, hemangiomas, periodontal disease, glaucoma, retinal diseases, and other conditions.