Last year I really really suffered from hayfever. I got some Opticrom eye drops (available over the counter, I think), which were good if taken when my eyes hurt, though it stung initially. Later in the season that appeared to lose its effect and I switched to Raptil (presciption needed), which I didn't think was as good as Opticrom was initially. In addition I has nasal spray (I *think* it was Flixonase) and Crarityn tablets.
This year I haven't been nearly so bad and the only thing I've done different is use Nazalese nasal spray (over the counter) as a preventative measure, which aims to stop you breathing in pollen, or something like that. It could be that this has made some difference, or it could be that I am simply now stronger against it having suffered for a few years (as many people do).