Skip to main content
OpenTrials
Completed

NCT Number: NCT02081781

The Factors That Affected the Outcome of Treatment of Congenital Nasolacrimal Duct Obstruction

The purpose of this study was to investigate various potential factors that affected the outcome of treatment of congenital nasolacrimal duct obstruction.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Congenital Nasolacrimal Duct Obstruction

Age range

1 week–5 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Department of Ophthalmology, Cathay General Hospital

Taipei, Taiwan, 106

About this study

Congenital nasolacrimal duct obstruction is a common condition during the first few years of childhood. Most cases may resolve spontaneously, but the remaining children whose blockage does not resolve may require primary probing. Controversy remains regarding the optimal timing of the probing procedure. Another controversy is related to the setting of surgery. Therefore, we try to investigate the factors that affected the outcome of treatment of congenital nasolacrimal duct obstruction under the same surgical doctor during the past 13 years in our hospital.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • a history of tearing and/or mucopurulent discharge beginning during the first few weeks of life
  • anatomical nasolacrimal duct obstruction

Exclusion criteria

  • previous probing
  • glaucoma
  • trauma
  • lid malpositions
  • craniofacial anomalies
  • congenital mucocele of the nasolacrimal sac

Treatment and study plan

Probing

Procedure

A punctal dilator was used for dilating the punctum. The nasolacrimal system was irrigated through either the lower or upper punctum with a hollow 23-gauge irrigating cannula attached to a syringe. A #0 (or #00) Bowman probe was passed through either the lower or upper canaliculus into the lacrimal sac and then directed downward through the nasolacrimal duct into nasal cavity. A "Hard" resistance could be felt as the probe touched the end of the nasolacrimal duct. A "Pop" tactile sensation might be noted while the probe passing through an obstruction at the valve of Hasner.

Primary outcomes

  1. probing success: both anatomical patency of the duct and functional free of symptoms

    Time frame: one week

Sponsors and collaborators

Lead sponsor

Cathay General Hospital

Other

Registry information

Official study title

Case Control Study of the Factors That Affected the Outcome of Treatment of Congenital Nasolacrimal Duct Obstruction

Important dates

Study start
2014
Primary completion
2014
Study completion
2014
First posted
Mar 7, 2014
Registry last updated
Mar 7, 2014

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.