My horse (21 year old bay quater horse gelding) has an eye problem also. His left eye only has been watering for the last day or so. The eye does not look really swollen or infected with anything. It just seems to drain a little and run down the side of his face. A neighbor of mine said the horse's nasolacrimal ducts are stopped up and need to be flushed. He showed me the little opening inside the horse's nostril that leads up to the eye. He instructed me to use a syringe and flush the ducts. Just wondering if anyone has ever performed this procedure. How many syringes of fluid did it take to flush the ducts out?