For a couple weeks, I've been having problems with my sinuses and allergies. Friday I woke up with swelling eyes, went to the doctor who said "oh boy, yes it is from allergies". With the way she was acting I guess it was pretty bad. Anyway, she told me to take zyrtec. The swelling went down some but it looks like it's still swelling and my vision is messed up. Can swelling eyes and allergies cause disturbed vision?