Lacrimal Scan
You have been referred for a tear duct scan (lacrimal) to determine if your tear ducts are obstructed.

This study involves the use of an extremely small amount of radioactive material mixed with water. The level of radioactivity used is extremely low and has no side effects. You will sit on a stool in front of a gamma camera, tilting your head back, one (1) to two (2) drops of radioactive medication will be placed in each eye. The medication will not sting or affect your eyesight.

Patient Preparation
None.

Procedure
After placing the drops in each eye you will be placed in front of the gamma camera (see photo), sitting on a stool. You will be asked to hold your head still for 1 minutes at 5 minute intervals. The gamma camera-computer will be collecting data following the path of flow of medication in each eye. Total time: 30 - 45 minutes.

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