Which statement describes a positive Jones 1 test?

Which statement describes a positive Jones 1 test?

• A. Patent canalicular drainage system
• B. Obstruction of nasolacrimal duct
• C. No drainage
• D. Needs Jones II test

Answer: (B)

The test checks whether tear drainage from the eye into the nasal cavity is open by using fluorescein and looking for dye in the nasal cavity or throat after instillation. If the dye cannot be recovered from the nasal area after a few minutes, it suggests there is a blockage along the lacrimal drainage pathway, most commonly the nasolacrimal duct. That’s why describing obstruction of the nasolacrimal duct fits a positive Jones I test best. The other statements imply normal drainage, lack of drainage, or the need for another test, which don’t describe a positive finding.

The test checks whether tear drainage from the eye into the nasal cavity is open by using fluorescein and looking for dye in the nasal cavity or throat after instillation. If the dye cannot be recovered from the nasal area after a few minutes, it suggests there is a blockage along the lacrimal drainage pathway, most commonly the nasolacrimal duct. That’s why describing obstruction of the nasolacrimal duct fits a positive Jones I test best. The other statements imply normal drainage, lack of drainage, or the need for another test, which don’t describe a positive finding.