LASERs in Ophthalmology: A Concise Guide for the Postgraduates
LASER is an acronym for “light amplification by stimulated emission of radiation”. Invented more than 50 years ago, today lasers are synonymous with precision and sophistication. The first medical application of lasers was the use in retinal photocoagulation and that role has been ever-evolving. Today its application is evident in all subspecialties of ophthalmology as a diagnostic and therapeutic tool. Since medieval times, the damaging effects of strong light have been known to mankind. Socrates advocated avoiding direct viewing of the solar eclipse. The first documented use of light therapeutically was by Meyer- Schwickerath. He focused sunlight on the retinas of patients to treat melanomas. An undocumented early experiment with the aim of therapeutic photocoagulation was done by Moran- Salas in the 1940s. Meyer- Schwikerath highlighted that photic burns may be beneficial as a therapy. However, the major limitation of this was the requirement of enough sunlight to achieve the desire

