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Related Experiment Video

Updated: Apr 28, 2026

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
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Postoperative changes in olfactory function after transcanalicular diode laser dacryocystorhinostomy.

Yildiray Yildirim1, Murat Salihoglu, Taner Kar

  • 1*Department of Ophthalmology and †Department of Otolaryngology, GATA Haydarpasa Training Hospital; ‡Division of Otolaryngology, Istanbul Surgery Hospital; §Department of Neurology, GATA Haydarpasa Training Hospital, Istanbul, Turkey; and ║Department of Otolaryngology, Amasya University Training and Research Hospital, Amasya, Turkey.

Ophthalmic Plastic and Reconstructive Surgery
|June 14, 2014
PubMed
Summary

Transcanalicular diode laser dacryocystorhinostomy (TCL-DCR) temporarily reduces olfactory function on the operated side. However, olfactory abilities typically recover within three months, indicating the procedure

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Area of Science:

  • Ophthalmology and Otolaryngology
  • Surgical Innovation and Patient Outcomes

Background:

  • Transcanalicular diode laser dacryocystorhinostomy (TCL-DCR) is a common, minimally invasive surgical technique for nasolacrimal duct obstruction (NLDO).
  • While TCL-DCR is recognized for its safety and efficacy, its impact on postoperative olfactory function remains under-investigated.
  • Understanding olfactory changes is crucial for comprehensive patient counseling and managing expectations after TCL-DCR.

Purpose of the Study:

  • To investigate the effects of transcanalicular diode laser dacryocystorhinostomy (TCL-DCR) on olfactory function.
  • To assess the temporal changes in olfactory abilities following TCL-DCR surgery for nasolacrimal duct obstruction (NLDO).

Main Methods:

  • A cohort of 42 volunteers (20-81 years) underwent detailed lateralized olfactory testing.
  • Testing was performed preoperatively and at 1 week, 1 month, 3 months, and 6 months post-surgery.
  • The non-operated nasal passage served as a control for comparison with the operated side.

Main Results:

  • A significant decrease in olfactory function was observed on the operated side post-TCL-DCR compared to the non-operated side.
  • Olfactory abilities demonstrated a return to baseline levels within three months following the procedure.
  • No long-term olfactory deficits were indicated by the six-month follow-up.

Conclusions:

  • Transcanalicular diode laser dacryocystorhinostomy (TCL-DCR) can be performed safely with respect to olfactory function.
  • A temporary decline in olfactory function is an expected outcome on the operated side.
  • Informed patient consent should include discussion of potential temporary olfactory impairment following TCL-DCR.