Hello and thank you for using JustAnswer Health.
Have you ever tried a neti pot, or also there are mechanical saline rinse devices that will gently rinse your nasal and sinus passages. The saline (an exact percentage of purified salt in filtered water) works to draw out pollen, dust, mold, dander, old mucous, bacteria etc. It was pretty miraculous, to me when I first started using it. I had been told my only hope was surgery, after the antibiotics no longer worked (duh - they didn't work because the real underlying issue was inflammation due to allergies).
If your eyes are also bothered by allergies, the same principle works here. You can purchase Bausch and Lomb's eye wash (also basically a saline solution) and use it once or tice daily to rinse out the pollen. Then the irritation stops, and the eyes feel much better as well as loose the redness.
There are other things too, that you may be aware of but that can help if you have not tried them. Such as getting an air purifier (HEPA type is the best for filtering allergens). Also washing the hair, showerng, washing clothers, pillow case and linens more frequently during allergy season can help.
Here is information on a neti pot. You can buy these at most pharmacies now, and also and health food and supplement stores:
IF you decide to try it, let me know and I'll provide you a few tips to get you started.
If you have further questions on this topic please reply to this post so that we can assist you further.