The article discusses the importance of wavelength and power of any laser for its therapeutic use, depending on the type of laser surgery and disease. It also briefs about lasers used for the treatment of lower urinary tract symptoms including pulsed mode holmium, continuous wave thulium and continuous wave potassium titanyl phosphate. It finally elaborates on advantages and disadvantages of laser techniques in LUTS and transurethral resection of the prostate (TURP).