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A study on the anatomy and treatment of complex congenital nasolacrimal duct obstruction under the guidance of orbital CT imaging reconstruction

Anatomical Analysis and Management of Complex Congenital Nasolacrimal Duct Obstruction: Insights from 3D and Multiplanar Orbital CT Reconstruction

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2500098597
Enrollment
Unknown
Registered
2025-03-11
Start date
2025-03-15
Completion date
Unknown
Last updated
2025-03-17

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

Conditions

Congenital nasolacrimal duct obstruction.

Interventions

The group that underwent lacrimal duct re-probing after CT imaging reconstruction.:NA

Sponsors

Eye Hospital, Wenzhou Medical University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
No minimum to 10 Years

Inclusion criteria

Inclusion criteria: 1. Refractory CNLDO cases that had previously undergone failed lacrimal duct probing and received orbital CT treatment before reoperation. 2. Cases that met either of the following two criteria were included as complex CNLDO cases: (1) having experienced at least one failed lacrimal duct probing with a firm obstruction encountered during the procedure or the probe tightly adhering to the nasolacrimal duct during probing; (2) having experienced at least two failed lacrimal duct probings.

Exclusion criteria

Exclusion criteria: 1. a history of other types of lacrimal surgeries, such as lacrimal intubation or balloon catheter dilation; 2. bony obstruction as demonstrated by CT imaging; 3. congenital or acquired anomalies such as hypertelorism, midface hypoplasia, or abnormalities of the anterior nasal or nasomaxillary complex; 4. Down syndrome.

Design outcomes

Primary

MeasureTime frame
Success rate of lacrimal duct probing;

Secondary

MeasureTime frame
Success rate of lacrimal duct probing;

Countries

China

Contacts

Public ContactZhenbin Qian

Eye Hospital, Wenzhou Medical University

shouxinqzb@126.com+86 571 86726050

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026