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Fig. 3 | BMC Ophthalmology

Fig. 3

From: Outcomes of bicanalicular nasal stent inserted by sheath-guided dacryoendoscope in patients with lacrimal passage obstruction: a retrospective observational study

Fig. 3

Sheath-guided endoscopic probing and intubation technique for bicanalicular intubation. The bicanalicular nasal stent is inserted by the sheath-guided bicanalicular intubation technique. The dacryoendoscope loaded with an 18-gauge catheter reaches the obstruction site, the obstruction is released with the tip of the dacryoendoscope (a) or with the tip of an 18-gauge catheter (b). After the dacryoendoscope with the 18-gauge catheter is reached the inferior meatus, the 18-gauge catheter is left in the inferior meatus and the lacrimal duct and then the dacryoendoscope is drawn out of the lacrimal duct (c). After a bicanalicular nasal stent is connected with the 18-gauge catheter on the lacrimal punctum side (d), the catheter is withdrawn from the lacrimal duct through the inferior meatus (e), to be able to draw the bicanalicular nasal stent into the recanalized lacrimal duct (f). The same procedure is performed on the other lacrimal punctum, and then the lacrimal passage obstruction is completely intubated (g). Figure was adapted from Kamao (2020) [37]

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BMC Ophthalmology

ISSN: 1471-2415

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