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Radiological evaluation of lacrimal apparatus injury after functional endoscopic sinus surgery
1Department of Otorhinolaryngology - Head and Neck Surgery, Lady Hardinge Medical College and Associated Hospitals, New Delhi, India.
Objective:
To determine the incidence of nasolacrimal duct injury after functional endoscopic sinus surgery radiologically, using computed tomography.
Methods:
Fifty patients of either sex who underwent functional endoscopic sinus surgery were evaluated for nasolacrimal duct injury by computed tomography. Computed tomography was conducted pre-operatively, and post-operatively at the end of four weeks, and nasolacrimal duct injury was analysed.
Results:
The prevalence of nasolacrimal duct injury dehiscence was 1.16 per cent, with a similar incidence of 1.16 per cent for nasolacrimal duct injury post-operatively. However, no cases of symptomatic nasolacrimal duct injury were recorded.
Conclusion:
Computed tomography scan is an effective, non-invasive method to evaluate nasolacrimal duct injury following functional endoscopic sinus surgery, in accordance with evidence-based medicine.
