My lil'one eye (right eye) is watery past 2days? Any reason or solution for it?

Sometimes it can also be caused my underlying allergies of the nasal cavity which causes irritation to the eyes. My LO had a similar problem some time back and the PD got us the try out this nasal spray which worked wonders. No harm trying to see if it alleviates his symptoms! https://www.samplestore.com/products/xepa-soul-serenaz-natural-sea-water-nasal-spray-pediatric