What would cause the eye to swell shut?
Trauma or infection/disease. If someone sustains a blow to the eye or the socket area, contusions and edema follow. The bruising and swelling are the result of trauma. If the eye is not injured but is infected or being attacked by disease, swelling is a possible side effect. Either of the two basic conditions should be evaluated by a medical professional. Your sight may be at stake. It’s not worth it to wait.