Purpose: To present an auxiliary electrical circuit (CAI) for lacrimal system intubation. Method: The device is described as well as its application to 40 patients with congenital and traumatic lacrimal obstruction. Results: An electrical characteristics study of CAI was performed and compared to other instruments reported in the literature, showing its advantages. Its use helped the retrieval of Crawford probes in all patients. Conclusions: CAI is safe and effective. Its use allows a quick localization and retrieval of Crawford probe even when performed by trainee physicians not familiar with lacrimal anatomy.
Lacrimal system; Intubation
