It's spring catarrh.and will persist up to 20 yrs of age. Please get his blood tested for atmospheric allergy in a good path lab nearby.
Please do cold compresses with ice
Put Betoact eye drops 2to3 times daily and rub ocupol d's eye oint twice daily on lids and bed time into the eyes..
Next Steps
Please avoid exposure to bright light,dust and smoke.
after allergy test avoid contact to allergens detected and/or get the specific vaccine prepared and injected as per the advice.