Watery eye of my baby boy who is 3. 5

Hello doc.. When my baby was born we got a eye drop( tobramycin) he was given at nursing home. After 15 days of his birth his right eye was affected and red also discharged yellow pus. So i continued tobramycin through out 1 month of his age. And that got clear. Actually as I noticed he got the eye problem by hurting eye with his hand. Then after 1.5 months of age he is getting water from his left eye. That time also he hurt that eye with hand cause I saw a scratch under his eyebrow. We thought that would be clear itself. But didn't. So we consulted a pediatrician online with video calling and she suggested Moxicife drop for 5 days three times a day.But didn't work. So we took him to our local pediatrician and he told to give moxicife for 15 days with a massage. 8 days is running. Now current situation is his left eye is still watery  and a mild flow of water when he is awake but Not while sleeping. yellow pus is seen but no redness and the eye looks a bit small sometimes.need help