Endocanalicular laser-assisted dacryocystorhinostomy. An anatomic study

Arch Ophthalmol. 1992 Oct;110(10):1488-90. doi: 10.1001/archopht.1992.01080220150037.


In human cadaver specimens, a laser fiberoptic was advanced through the canalicular systems to create fistulas between the nasolacrimal sac and nose. A 400- to 600-microns, blunt-tipped quartz fiberoptic was then advanced through the upper and/or lower canaliculus to the medial aspect of the nasolacrimal sac. After 10 to 15 laser pulses (10 W for 0.1 second), a 2.5 x 2.5-mm fistula was created between the lacrimal sac and the nose just anterior and inferior to the middle turbinate. Additional laser pulses can further enlarge the fistula. Endocanalicular laser-assisted dacryocystorhinostomy has potential advantages compared with endonasal laser-assisted dacryocystorhinostomy, including the following: laser energy is directed away from the eye; the technique resembles standard nasolacrimal probing; and nasal endoscopy and instrumentation may prove unnecessary.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Dacryocystorhinostomy / methods*
  • Fiber Optic Technology
  • Fistula
  • Humans
  • Lacrimal Apparatus / pathology*
  • Lacrimal Apparatus / surgery
  • Laser Therapy / methods*
  • Nasolacrimal Duct / pathology*
  • Nasolacrimal Duct / surgery
  • Nose / pathology
  • Nose / surgery