title: Transcanalicular laser dacryocystorhinostomy using low energy 810 nm diode laser.
abstract: BACKGROUND
  Hypertrophic scarring may be a cause of failure after transcanalicular laser dacryocystorhinostomy (DCR) surgery. This hypertrophic scarring results from tissue charring and excessive coagulation, which may be caused by the high laser energy. We have evaluated the use of low energy settings to prevent hypertrophic scarring, for a successful outcome.
  
  
  OBJECTIVE
  To perform and evaluate transcanalicular laser DCR using low energy 810 nm diode laser.
  
  
  METHODS
  Interventional, non-comparative, case series.
  
  
  METHODS
  Patients with nasolacrimal duct obstruction and chronic dacryocystitis, who needed DCR, and were fit for surgery under local anesthesia, were recruited to undergo transcanalicular laser DCR using a 810 nm diode laser. The outcome was measured by the patency of the lacrimal passage, as indicated by the relief in the symptoms and the patency on syringing at the last follow-up. The surgical time and surgical complications were noted.
  
  
  METHODS
  Descriptive analysis.
  
  
  RESULTS
  The study included 94 patients. The average age was 30.1 years (range 15 - 69 years). Seventy (74.4%) patients were female. Eight patients had failed external DCR. Per-operative patency of the passage was obtained in all the patients. Average surgical time was seven minutes (5 - 18 minutes). At the end of the study period of one year, a successful outcome was seen in 85 patients (90.5%). There were eight patients of previous failed DCR surgeries, and six of them achieved a cure at the end of follow-up.
  
  
  CONCLUSIONS
  Transcanalicular Laser DCR can be safely performed using a low power 810 nm diode laser. The surgery is elegant, minimally invasive, allows fast rehabilitation, and has an excellent success rate.
authors: Department of Ophthalmology, King George's Medical University, Lucknow, Uttar Pradesh, India.
authors: Sanjiv K
authors: SK
authors: Gupta
authors: Ajai
authors: A
authors: Kumar
authors: Swati
authors: S
authors: Agarwal
authors: Paritosh
authors: P
authors: Pandey
keywords: 810 nm diode laser; Chronic dacryocystitis; dacryocystorhinostomy; diode laser; transcanalicular DCR