Why even on routine of allegra (fexofenadine) and flonase are itchy eyes harder to treat than any other hay fever symptom? do i need rx eye drops?

Conjunctivitis: Everyone responds to allergies differently, but persistent eye symptoms refactory to over-the-counter eyedrops might benefit from a prescription grade preparation. Make sure that you are practicing good avoidance measures, avoiding overuse of contacts when eyes are irritated, and washing eyes out with preservative-free drops. If you have persistent symptoms see an Allergist for further workup.