What is the role of Jones dye test in the diagnosis of periorbital infections?

Updated: Jul 31, 2018
  • Author: Bobak Zonnoor , MD; Chief Editor: Gil Z Shlamovitz, MD, FACEP  more...
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The Jones dye test is used to assess patency of the lacrimal drainage system. In the first part of the test, a drop of fluorescein is placed in the conjunctival cul-de-sac. After 5 minutes, the nose is examined for the presence of dye. If no dye is present, an obstruction is present and the second part of the test is performed.

In the second part of the test, a cannula is placed into the lacrimal sac, which is then washed with saline. If no fluorescein is noted, the dye is obstructed in the upper (canalicular) portion of the system. If dye is present, then the obstruction is in the lower (sac, duct) portion. [65]

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