Eye rubbing not only aggravates the allergy but also changes the shape of the cornea,advise to use cold compresses for itch relief.Medication has to prescribed by looking at the eyes.If you weren't allergic to pet fur before then its not likely to be the cause,could be seasonal allergy.
Next Steps
Take an ophthalmologist consultation for exact care and medication.
Health Tips
Avoid eye rubbing and over the counter medications.