I often have trouble with clogged tear ducts. My opthamologist suggested washing my eyes out with Johnson's baby shampoo. It supposedly cuts the oils that clog the tear ducts and is gentle enough to wash the tear duct area without discomfort. She did specify to buy the brand name. It seems to work pretty well. It was recommended to use it twice a day when you are having problems. I will occasionally use it to wash my eyes just as a precaution when I think about it. Hopefully this will give you some relief.

Age 61. AS dx'd at age 57
HLA-B27+,iritis/uveitis periodically since 1970, diabetic
Meds. naproxen and muscle relaxer(as needed)