the most frequent cause of eye allergy is pollution. Check the water source of the home. If it is doubtful about the purity, get a purifier cap for the taps.
Use sunglasses when you are out of home. It will protect the eyes from air pollution a bit, not fully. Wash eyes as frequently as possible.
And try to keep away of the computer screen till the problem mends.
If the problem continues or bounces back, better you visit Sankar Netralaya in Chennai. I was under their treatment for a few years. They are the best.