Puffy eyes refer to swelling or puffiness around the eyes, often caused by fluid retention, lack of sleep, or allergies. This condition can make the eyes appear larger and can be accompanied by dark circles. Common triggers include excessive salt intake, crying, or prolonged screen time. In some cases, puffy eyes may indicate underlying health issues, such as sinus infections or thyroid disorders. While usually temporary, persistent puffiness should be evaluated by a healthcare professional. Simple remedies include cold compresses, staying hydrated, and reducing salt consumption to help alleviate the swelling.