title: [KTP laser in lacrimal duct surgery].
abstract: OBJECTIVE
  The use of endoscopic methods of examination and treatment has brought new possibilities for non-invasive techniques in lacrimal surgery. The possibilities of the use of a PTP (potassium-titanium-phosphate) laser system are shown.
  
  
  METHODS
  The use of a PTP laser for external dacryocystorhinostomy (DCR) as well as for transcanicular methods when connected to an endoscope are shown.
  
  
  RESULTS
  With a PTP laser it is possible to make a very precise hole in the bone which simplifies the preparation of the nasal mucosal flap. Endocanalicular procedures for performing laser dacryoplasty with rechanneling of the lacrimal system is possible and examples are demonstrated.
  
  
  CONCLUSIONS
  The high output of a PTP laser of up to 10 W makes a precise preparation of the bone hole for DCR possible. The endoscopic connection opens the possibility of an endocanicular use but the high energy output means that increased scar tissue formation is to be expected.
authors.affiliation: Augenklinik, Klinikum Darmstadt, Germany. heinrich.bleckmann@schlosspark-klinik.de
authors.forename: K H
authors.initials: KH
authors.lastname: Emmerich
authors.forename: R
authors.initials: R
authors.lastname: Ungerechts
authors.forename: H W
authors.initials: HW
authors.lastname: Meyer-Rüsenberg
mesh_terms: D003608:Dacryocystorhinostomy / Q000295:instrumentation*; D004867:Equipment Design; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000175:diagnosis; D053685:Laser Therapy / Q000295:instrumentation*