During spring i would just have watery eyes but this spring i had very bad pollen allergies . why has my allergy become so severe?

Normal: It is normal for allergy severity to fluctuate from year to year. It is related to the amount of pollen in the air and to variations related to your immune system. Some allergic eye problems (examples: vernal conjunctivitis, atopic keratoconjunctivitis) need to be evaluated as do other eye problems such as infection. If you notice changes in your symptoms, best to see Allergist.