Schematic diagram of the surgical procedure (IMAGE)

Toho University

Schematic diagram of the surgical procedure

Caption

(a) The frontal processes of the maxilla and the lacrimal bone are removed to expose the nasolacrimal duct and the lacrimal sac. (b) The mucous nasolacrimal duct and the lacrimal sac are elevated from the bony nasolacrimal canal and the orbital periosteum. The nasolacrimal duct is then severed at the lower end. The transition from the eyelid to the ocular conjunctiva is incised. (c) The tip of the severed nasolacrimal duct is withdrawn into and sutured to the conjunctiva incision. The medial wall of the lacrimal sac is trimmed and the lacrimal sac is widely opened.

Credit

Munetaka Ushio

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