If you find swollen eyes after waking up, you may consider that the swollen eyes appear after waking up due to water consumption before sleep, poor sleep quality or eye rubbing, causing water to be discharged without metabolism or edema of local tissue damage in the eyes, which generally does not require special treatment and can disappear on its own. In addition, if you have eaten allergy-prone food before going to bed, or if you are allergic to bedding when you sleep, you may have swollen eyes after waking up, which may be accompanied by itching and skin rash. If you frequently wake up with swollen eyes and the swelling does not subside easily, you need to consider pathological factors such as eye diseases, kidney diseases, heart diseases, etc.: 1. Eye diseases: such as blepharocyst, blepharitis, keratitis, conjunctivitis, usually consider inflammatory stimulation during infection causing swollen eyes, which can also be accompanied by eye pain, eye redness, photophobia, tearing and other symptoms, which require the use of levofloxacin, under the guidance of a doctor. 2, kidney disease: such as nephritis, nephrotic syndrome, chronic renal failure, due to kidney disease caused by protein loss, which makes the extracellular fluid osmotic pressure decreased, fluid easily into the eye and other loose connective tissue, eye swelling, usually accompanied by urinary changes, such as increased urine volume, foam urine, etc., kidney disease caused by eye swelling need to go to the hospital for symptomatic and causal treatment 3. Heart diseases: such as coronary heart disease, dilated cardiomyopathy, cardiac insufficiency, etc., cause water and sodium retention in the body due to abnormal blood circulation, resulting in swollen eyes, and generally also edema of both lower limbs, as well as chest pain, palpitations, dyspnea, and other manifestations. In addition, liver diseases, endocrine diseases, rheumatic immune diseases, and anemia may cause swollen eyes after waking up from sleep due to reduced osmolarity of extracellular fluid, etc. It is recommended to seek medical attention in a timely manner to clarify the specific causes and treat them under the guidance of a doctor to relieve the symptoms of swollen eyes as soon as possible. For swollen eyes after waking up, in addition to treatment according to the cause, we also need to pay attention to strengthen eye care, avoid rubbing the eyes with polluted hands, avoid staying up late, do not drink too much water before going to bed, choose the material of comfortable bed linen, and eat lightly.