Flap to subcutaneous fixation versus mucosal flap anastomosis in external dacryocystorhinostomy Surgical outcomes and operative time A randomized controlled trial

Comparison between flap-flap and flap-subcutaneous tissue techniques in external dacryocystorhinostomy, randomized controlled study

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

TCTR

Registry ID

TCTR20260506005

Enrollment

Registered

2026-05-06

Start date

2023-03-15

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Primary acquired nasolacrimal duct obstruction causing epiphora in adult patients requiring external dacryocystorhinostomy Dacryocystorhinostomy, Surgical flaps

Interventions

The lacrimal sac flap and nasal flap were fixed with subcutaneous tissue.,The lacrimal sac flap and nasal flap were anastomosed.

Experimental Procedure/Surgery,Active Comparator Procedure/Surgery

flap fixation,flap anastomosis

Eligibility

Sex/Gender

All

Age

20 Years to 100 Years

Inclusion criteria

Inclusion criteria: 1. primary nasolacrimal duct obstruction

Exclusion criteria

Exclusion criteria: 1. congenital nasolacrimal duct obstruction 2. trauma 3. previous lacrimal surgery 4. previous radiation

Design outcomes

Primary

Measure	Time frame
surgical success rate at 6 months after surgery functional and anatomical patency	—

Secondary

Measure	Time frame
surgical time operative time minute	—

Countries

Thailand

Contacts

Public ContactRaveewan Choontanom

Phramongkutklao College of Medicine

r.choontanom@gmail.com0917891464

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 10, 2026