Medical Imaging

Nuclear Medicine > Exams & Procedures > Lacrimal Scan

This test determines tear flow from the eyes through the tear ducts.

The test involves placing a small amount of a radioactive eye drop in each eye. Pictures will be taken to follow the flow of your tears through the tear ducts.


  • Bring a list of all medications and supplements you take. This includes vitamins, herbal remedies, and holistic medications.
  • Do not bring children or pregnant women with you to the department. We do not want to expose them to unnecessary radiation.
  • Any of these procedures is subject to change according to the nuclear medicine physician. The duration of the tests is a rough estimate. Please be aware that the time may be lengthened if a scan has to be repeated, if emergency cases are brought to the department or due to unforeseen circumstances.

About the Procedure

  • The procedure takes about 45 minutes.
  • A technologist will briefly explain the test to you and try to answer any questions you may have about the procedure.
  • A technologist will ask you a few questions about your medical history and medications.
  • You will be asked to lie down on a bed with a camera positioned above your head.
  • The technologist will place one drop of radioactive tracer in each eye.
  • Pictures will be taken in intervals for 30 to 45 minutes.