<s>[INST] My husband is home recovering from heart surgery. Suddenly one of his eye lids swelled up after dinner. He didn t eat anything new and he has been taking his post surgery medicine for several days, so I didn t think it is from an allergy. Should I worry. [/INST] Puffy eyes are usually only a temporary cosmetic worry, but occasionally. Most commonly, puffy eyelids is the result of aging causing a loss of skin elasticity around the eye. The tissue loses its firmness. Other causes are sleeplessness, thyroid dysfunction, fatigue, smoking, and increased oxidative stress. Over Intake of salt and should be taken care . Low-carb diet can prevent eye puffiness by preventing water retention. Eating foods rich in vitamins, especially A, C and E, helps to reduce eye puffiness. Use less salt & sugar, proper sleep, take a lot of water, A cold compress near the eye can act as a short-term remedy, Take Homeopathic Kali Carb 30 / twice a day /2 days. Be careful, Severe and persistent puffiness may be a sign of other serious medical conditions, calls for medical guidance. Consult your treating doctor if it persists hope this helps solve your quarry Take care. All the best.Don't hesitate for further query if any. </s>