Swollen eyes in the morning are considered to be caused by increased water intake or a disease in the organism. If the patient drank too much water the day before, resulting in water and sodium retention in the body, water accumulates in the eyelid area, resulting in puffy eyes in the morning. This kind of swelling of the eyes due to excessive water intake, as long as the next, control the amount of water intake, the symptoms can disappear. In case of sudden onset of thirst in the organism, pre and postprandial blood glucose should be closely monitored under the supervision of a physician to rule out the presence of elevated blood glucose. Patients who suffer from heart disease, such as heart failure, if not detected in time to seek medical attention, in addition to shortness of breath during activities, often feel tachycardia, as well as dizziness and weakness, may also have swollen eyes. If the patient has chronic renal insufficiency, there will also be morning eye swelling, accompanied by swelling of the limbs and face. If morning eye swelling occurs several times, you should consult a doctor to identify the cause of the disease in order to avoid delaying the best time for treatment.