due to viral infection will cause blood shot eyes. Viral conjunctivitis
presents as pink eye with watery discharge and irritation.
If he has pain ,with sticky discharge it might be a secondary bacterial infection. In any case he needs an ophthalmic evaluation to know the extent of the infection and topical eye drops.
Cool compressions with anti histaminic eye drops 4 times a day-and lubricant will help him till then.
Antibiotic and steroid
should be started after detailed evaluation.
Hope he gets better soon. Take care.