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Quantitative lacrimal scintigraphy after dacryocystorhinostomy
Güler Zilelioglu1, Ozlem Küçük, Oya Tekeli
1Department of Ophthalmology, Faculty of Medicine, Ankara University, Ankara, Turkey.
Summary
Quantitative dacryoscintigraphy revealed slower tear flow after external and endoscopic dacryocystorhinostomy. Conjunctival dacryocystorhinostomy did not significantly alter tear drainage times in patients with successful surgery.
Area of Science:
- Ophthalmology
- Medical Imaging
Background:
- Dacryocystorhinostomy (DCR) is a surgical procedure to restore lacrimal drainage.
- Evaluating the functional success of DCR is crucial for patient outcomes.
Purpose of the Study:
- To quantitatively assess lacrimal drainage function after successful dacryocystorhinostomy using dacryoscintigraphy.
- To compare tear flow dynamics across different DCR surgical techniques.
Main Methods:
- Quantitative dacryoscintigraphy was performed on 72 patients (72 eyes) post-successful DCR.
- Patients were categorized into three groups: external DCR (n=35), endoscopic DCR (n=15), and conjunctival DCR with Jones tube (n=22).
- T(1/2) values (time to half-clearance) for the palpebral aperture were measured and compared to normal controls.
Main Results:
- Patients undergoing external and endoscopic DCR showed significantly lower mean T(1/2) values compared to controls (P < .01).
- No statistically significant difference in mean T(1/2) values was observed in the conjunctival DCR group.
- All patients had patent lacrimal systems and no epiphora post-surgery.
Conclusions:
- External and endoscopic dacryocystorhinostomy are associated with reduced tear flow rates.
- Conjunctival dacryocystorhinostomy with a Jones tube does not appear to significantly impact palpebral aperture T(1/2) values.
- Quantitative dacryoscintigraphy provides valuable insights into functional outcomes after DCR surgery.