It was very simple. The phys. examined my eye and informed me that I had a blocked tear duct. He explained that he would need to unclog it by using an instrument. It resembled a big paper clip that someone bent into a hooked shape. He told me to hold still while he poked the instrument into the corner of my eye. There was absolutely no discomfort at all. Because I was pregnant at the time, there was no administration of any sedatives or medications and it was absolutely unnecessary---so I don't know that medications would be given in any event. The procedure was so quick---the bat of an eye--and it was all over.
He told me I would experience fluid running down my sinuses, and I did. That was all! It was simple and easy and your little boy should have no difficulty with the procedure! This was done by an EYE Doc at an HMO. There was instant relief and I've had no problems with my tear duct since then!
The sooner he is seen and has this remedied, the sooner he will feel better, and the tearing will stop! Hope all goes well! Let me know how it goes!