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

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

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT02081781

Enrollment

800

Registered

2014-03-07

Start date

2014-02-28

Completion date

2014-03-31

Last updated

2014-03-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Congenital Nasolacrimal Duct Obstruction

Brief summary

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

Detailed description

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.

Interventions

PROCEDUREProbing

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.

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

1 Weeks to 5 Years

Healthy volunteers

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

Design outcomes

Primary

Measure	Time frame
probing success: both anatomical patency of the duct and functional free of symptoms	one week

Countries

Taiwan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026