Negative Jones-1 and jones-II Dye test indicate: (A) Primary Hypersecretion of tears, (B) Partial obstruction of distal nasolacrimal duct, (C) Lacrimal pump failure, (D) Partial obstruction of lacrimal canaliculi
Answer is C. Ans. (c) Lacrimal pump failureRef: Kanski 8/e, p. 67, 68* Partial obstruction of proximal lacrimal passages (Punctal or canalicular) or pump failure- Negative Jones 2* Partial obstruction of the nasolacrimal duct distal to the sac-Positive Jones, 2.