How many kinds of lacrimal bypass surgery?

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Clinical for all causes of lacrimal duct recanalization to lacrimal bypass surgery can be considered. Indications for:In 1, congenital absen

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Clinical for all causes of lacrimal duct recanalization to lacrimal bypass surgery can be considered. Indications for:

In 1, congenital absence of lacrimal duct (no lacrimal canaliculus, lacrimal sac, and lacrimal duct)

2, traumatic lacrimal duct obstruction (composite nasal deformity, orbital ethmoid fracture, nasal lacrimal bone block)

3, lacrimal, small, tubular, lacrimal sac secondary complete obstruction

Currently available methods and materials are as follows:

1, autologous (conjunctiva, vein, lip mucosa, etc.); 2, allogeneic; 3, artificial (silica gel tube, epidural tube, polyurethane, glass tube, glass + hydroxyapatite, glass +Medpor, gold tube......)

 

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