A 60 yrs old man presented with watering from his left eye since 1 year.Syringing revealed a patent drainage system.Rest of the ocular examination was normal.A provisional diagnosis of lacrimal pump failure was made.Confirmations of the diagnosis would be by:

A 60 yrs old man presented with watering from his left eye since 1 yea

1.	A 60 yrs old man presented with watering from his left eye since 1 year.Syringing revealed a patent drainage system.Rest of the ocular examination was normal.A provisional diagnosis of lacrimal pump failure was made.Confirmations of the diagnosis would be by:
A.	Dacryoscintigraphy
B.	Dacryocystography
C.	Pressure syringing
D.	Canaliculus irrigation test
Answer» B. Dacryocystography