2 days ago i went for an eye test. pupil dilation drops were administered. 10 hrs later i developed swelling around the eyes,and severe irritation of the area including itching . i think it is an allergy.i was prescribed cetgel one tablet a day as an antihistamine and flupred eyedrops one drop twice a day for one day only.my face still looks out of a horror film with the swelling and the irritation/itching continuing unabated.how many days will this last and what is the best treatment for the swelling and the irritation to subside?