Clogged tear duct most likely. Babies also get goopy eye when the have colds. For some reason, they not only get the usual cold symptoms, but also goopy eye.
Just keep an eye on it and keep it very clean. Put a cotton ball compress over tge eye and message the bridge of the nose toward the sinuses. Call the doc if it starts to swell or get red in the eyeball as that would be more conjunctivitis and would need antibiotics. Very easy for them to get but goes away with even just a few applications of the cream.
I cleaned my sons eye whenever it was sticky and wiped the gunk and crusty bits. Then twice a day I put breastmilk in his eye. It has finally cleared after almost 3 weeks.
Re: gooey eye?
Babies also get goopy eye when the have colds. For some reason, they not only get the usual cold symptoms, but also goopy eye.