Evaluation tests Fluorescein disappearance test(no dye after 3 mins) Probing and irrigation (hard stop or soft stop) Jones dye testing (the primary and secondary test) 。·Contrast dacryocystography Nuclear lacrimal scintigraphyEvaluation tests • Fluorescein disappearance test (no dye after 3 mins) • Probing and irrigation (hard stop or soft stop) • Jones dye testing (the primary and secondary test) • Contrast dacryocystography • Nuclear lacrimal scintigraphy