A little puffiness of the eyes in the morning requires ophthalmologic examination, thyroid function test, liver and kidney function test, cardiac function test and so on. Localized lesions of the eyes can cause puffiness, such as allergic blepharitis, etc. Therefore, patients need to do ophthalmologic examination, including slit lamp examination, intraocular pressure test, etc. Thyroid disorders can lead to puffy eyelids, such as hypothyroidism, etc. Patients need to undergo thyroid function tests, including thyroid ultrasound and related blood tests. Kidney disease can also cause swelling of the eyelids, such as chronic nephritis, nephrotic syndrome, etc. Patients need to do kidney function tests, including blood tests and urine tests. Heart disease can also cause swelling of the eyelids, such as cardiac insufficiency, heart failure, etc. Patients need to do cardiac examinations, including electrocardiography, cardiac ultrasound examination. Patients with puffy eyes are advised to seek prompt medical attention to assess their condition and undergo examination and treatment under the guidance of a doctor.