My daughters got a cold she's 3 months she's got funky watery eye with red underneath a cough and doctors said it was a viral infection just said keep her hydrated and wipe her eyes with cotton and warm water x
Could be viral conjunctivitis if his actual eye ball goes really blood shot or large patches of red and or the lids swell shut or red and funky then see a doctor. My daughter had viral conjunctivitis the other week it went in 2 days but my toddler at 1 got a sudden conjunctivitis in 4 hours her eyelids swelled massive and sealed shut and she nearly got a rare complication of having such where her eye muscles were not 100 per cent during. She had to have medication for it. As did my son when he was a baby for the same sporting look. It will look similar to having a black eye and really swollen and shut