You can treat swollen eyelids at home, especially if they are caused by fluid retention, stress, allergies, or lack of sleep. If those are possible causes, then swelling will often be in both eyes. You can use a saline solution to rinse your eyes, if there’s discharge; Use a cool compress over your eyes. This can be a cold washcloth; Remove contacts, if you have them; Place chilled black tea bags over your eyes. Caffeine helps reduce swelling; elevate your head at night to decrease fluid retention.