Rosacea can to some extent affect on the eyes, such as red eyes, eye burning, eye pain, feeling foreign objects in the eyes. And yes, rosacea can also lead to eyelid inflammation and swelling. In about a half of all the rosacea cases, the patients will get infected eyes. And there are also other reasons to cause swelling eyes. For example, crying can also lead to eye swelling, which is because too much bloods and fluids flow to the eyes when people are crying. In addition, drinking too much alcohol or eating too much food rich in too much sodium content before people go to sleep can lead to eye swelling when they wake up. Besides, if people toss and turn in the bed at night when they are sleeping, they will get swelling eyes, too, due to the inadequate sleep. In some cases, swelling eyes can be caused by allergies.