Our eyelids are thin folds of skin which cover and protect our eyes. At times our eyelids can appear to be red, inflamed or even swollen. Besides affecting our appearance, a swollen eyelid could also affect our vision if it is severe enough. In the majority of cases the swelling should subside within 24 hours however if it lasts longer than 24 to 48 hours you should speak to your pharmacist or doctor. The following are 6 common cause of swollen eyelids:   1. Allergies When your eyelids are swollen and your eyes are red, itchy or watery the cause...