Health Blog

Holmium YAG OIU (Optical internal Urethrotomy)


Optical Internal Urethrotomy is a medical procedure performed to treat urethral strictures. It is a medical condition where the urethra (the tube that drains urine from the bladder) becomes narrow. Holmium YAG is an advanced form of OIU where the holmium laser fiber is introduced through a side channel once the stricture is visualized by urethroscopy. The frequency is set at 7 Hertz and the power used is 13-15 watts. The fiber is positioned about 1 mm away from the tissue and the laser is fired at 12 o’clock position or where the stricture is asymmetric until an adequate caliber of urethra is obtained comparable to the proximal urethra.