The baby's eyes will shed tears, which is probably caused by the blockage of the lacrimal sac.

ophthalmologic examination

It's best to go to an ophthalmologist for diagnosis first.

Exploration of lacrimal passage+irrigation of lacrimal passage

In the early stage of lacrimal sac obstruction, lacrimal passage probing and irrigation can be used, and after lacrimal passage is opened, you should go to the hospital for examination, irrigation and consolidation frequently.

operate

If you can't find out, you can only operate.