what causes tear duct trauma
Causes of Tear Duct Injury. Although the use of a seatbelt and airbag can usually lessen the severity of a torn tear duct, this type of injury can still occur when involved in an auto accident. The potential for flying debris to affect the eyes can often cause facial injuries. Some auto-related causes of tear duct trauma include: 1  Airbag deployment. 2  Broken glass. 3  Dashboard fragments. 4  Steering wheel impact. 5  Windshield debris. 6  Wreckage from other vehicles.