Your son should first wash his eyes thoroughly with cold water. You can check his eyes with a regular torch light if there is any external injury
, look for any redness
in the eyes and you can ask him whether he is having any difficulty in seeing things, any irritation/burning sensation/ pain in the eyes. He should start immediately with any antibiotic eye-drop , lubricating eye drop
and anti-inflammatory eye drop like: Ketorolac
eye drop. Please do these basic things on priority .