Estimation of installation correctness of intubation material in lacrimal ducts was performed after surgical measures on lacrimal ducts.

Chronic post-traumatic dacryocystitis was diagnosed in 2 patients after using multi-layer spiral CT with contrast enchancement. Acute ectasia (15.5 × 7.6 mm) of lacrimal sacs on both sides with sharp and straight contours was registered. In both cases nasolacrimal ducts did not visualize due to osseous structures injury of nasolacrimal ducts.

Lacrimal ducts obliteration was diagnosed using multi-layer spiral CT with contrast enchancement. Patency blockade of lacrimal ducts with no contrast substance in subjacent parts of lacrimal passages was registered. Moderate widening of lacrimal ducts lumen up to 1.1 mm. with sharp and straight contours was also found.

In case of such pathology, it is preferable to perform bioplasm nls after surgical intervention and placement of silicone capillary tube.