Present status of endoscopic laser techniques in urology.

Following a brief description of the physical and biomedical characteristics of laser light, a report is given on the development and present status of laser endoscopy in urology. Presently there appear to be two principal indications: i. e. certain bladder tumors and urethral strictures. Neodymium: YAG and argon ion lasers are used for both disorders. The special laser features of these instruments are described.