Swelling of the eyes refers to the presence of excess fluid (oedema) in the connective tissues around the eye along the eyelids.
Various causes of a swollen eye include conjunctivitis; blepharitis; infections; insect bites; and allergies to new drugs or cosmetics. More serious, potentially sight-threatening causes of eyelid swelling include orbital cellulitis, thyroid eye disease and trauma or injury to the eye area.
Since the causes are wide-ranging, you should make an appointment to discuss your symptoms with an eye doctor and undergo an eye examination. Your condition can thus be treated appropriately and effectively.