# Endoscopy Assisted Probing Versus Simple Probing in Primary Congenital Nasolacrimal Duct Obstruction

> **NCT03242681** · NA · UNKNOWN · sponsor: **Tehran University of Medical Sciences** · enrollment: 320 (estimated)

## Conditions studied

- Congenital Nasolacrimal Duct Obstruction

## Interventions

- **PROCEDURE:** Endoscopy Assisted Probing procedure

## Key facts

- **NCT ID:** NCT03242681
- **Lead sponsor:** Tehran University of Medical Sciences
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2017-07-20
- **Primary completion:** 2020-02-01
- **Final completion:** 2020-07-01
- **Target enrollment:** 320 (ESTIMATED)
- **Last updated:** 2019-10-10


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03242681

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03242681, "Endoscopy Assisted Probing Versus Simple Probing in Primary Congenital Nasolacrimal Duct Obstruction". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT03242681. Licensed CC0.

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