or is attributable to nasolacrimal duct stenosis. Where such doubt exists, the early dynamic sequence scintillography in these cases will show (or fail to show) very rapid uptake into the lacrimal ...

Congenital nasolacrimal duct obstruction (CNLDO ... However, factors such as severe tear duct stenosis, early stent loss, and bilateral surgery were identified as risk factors for surgical ...

One can divide lacrimal drainage system tests into functional and anatomical evaluations. The functional (physiological) tests are designed to assess tear flow under natural physiological ...