Swollen eyes after sleeping can be caused by kidney disease, thyroid disease, drinking too much water, eye inflammation and other factors. 1. Kidney disease: nephritis due to drainage disorders can lead to water retention in the eyes, or cause hypoproteinemia, resulting in water accumulation in the eyelids and other parts of the tissue laxity, thus causing eye swelling performance. 2. Thyroid disease: hyperthyroidism and other diseases may also cause protruding eyes and swollen eyes. 3. Excessive drinking: drinking a lot of water before going to bed and sleeping with a low pillow position affects the blood circulation of the face, which may lead to swelling of the eyes after a sleep. 4. eye inflammation: blepharitis, dacryocystitis, dacryoadenitis, orbital cellulitis and other inflammatory diseases of the eye, can also appear in the eyes swollen performance. If your eyes are swollen after a nap, and you can’t get relief after a long rest, you should consult a doctor in time, under the guidance of specialists, to help improve the discomfort symptoms as soon as possible.