Endoscopic inferior dacryocystorhinostomy

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Conventional dacryocystorhinostomy (DCR) usually involves extensive removal of bone at the lacrimal fossa and hence risks disruption of the lacrimal pump mechanism. A physiological operation for nasal lacrimal blockage is described whereby only the inferior portion of the lacrimal sac and the adjacent duct are marsupialized into the nose. The operation is safe, quick and does not involve sophisticated instruments. Result of 81 consecutive endoscopic inferior DCRs reveals a success rate of over 90% which is maintained with time. Most patients had a wide lacrimal window with preserved lacrimal pump movement at the superior sac remnant.

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