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Nasolacrimal duct obstructionNasolacrimal duct obstruction is a common cause of epiphoraEpiphora. In addition to symptomatic excess tears, it may be associated with infection (dacryocystitis). Surgical bypass of a nasolacrimal duct obstructionNasolacrimal duct obstruction via dacryocystorhinostomy (DCR)Dacryocystorhinostomy (DCR) may be indicated to treat epiphoraEpiphora or infection or both. The external approach has an extensive history and remains a key oculofacial surgical procedure. In this chapter, the authors describe indications and surgical techniques for external DCRExternal DCR.

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External Dacryocystorhinostomy

  • 章节

  • 发表日期：

    2025年

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  • Sammie E. Fung,
  • Liane O. Dallalzadeh,
  • Catherine Y. Liu

摘要

Nasolacrimal duct obstructionNasolacrimal duct obstruction is a common cause of epiphoraEpiphora. In addition to symptomatic excess tears, it may be associated with infection (dacryocystitis). Surgical bypass of a nasolacrimal duct obstructionNasolacrimal duct obstruction via dacryocystorhinostomy (DCR)Dacryocystorhinostomy (DCR) may be indicated to treat epiphoraEpiphora or infection or both. The external approach has an extensive history and remains a key oculofacial surgical procedure. In this chapter, the authors describe indications and surgical techniques for external DCRExternal DCR.