Ask an Eye Doctor and Get an Answer ASAP
Green discharge is suggestive of infection and it is likely to be conjunctivitis. He may have caught it from your cousin. He will need anti-biotic drops like Tobramycin. You should see an ophthalmologist to confirm the diagnosis. Thanks and best wishes.
Please, click the ACCEPT BUTTON so that I can get my dues. BONUS and a POSITIVE FEEDBACK will be appreciated.