It is generally recommended that at the conclusion of a nasolacrimal duct probing procedure in infants, the efficacy of the operation be assessed by confirming the presence of the lacrimal probe in the nose by introducing a second probe through the nares. Direct metal-on-metal contact provides confirmation that the first probe successfully entered the nasal cavity.1 This maneuver is usually followed by the irrigation of a colored solution, most commonly fluorescein, through the lacrimal system, which is subsequently aspirated from the nose. If the probing procedure was unsuccessful in relieving the obstruction, or if a false passage was made, attempt at irrigation may result in the irrigating solution infiltrating the periorbital tissue. Serious problems may subsequently result if the solution used for irrigation is one that cannot be safely tolerated either subcutaneously or intramuscularly.
Report of a Case.
I examined a 2-year-old girl because she was noted to have
Kushner BJ. Solutions Can Be Hazardous for Lacrimal System Irrigation. Arch Ophthalmol. 1993;111(7):904-905. doi:10.1001/archopht.1993.01090070022009