Eye sunkenness is a common symptom in ophthalmology, which can be caused by a variety of reasons and different treatment methods, as follows: 1. dehydration, commonly caused by a large amount of water loss in a short period of time, failure to rehydrate in time after a lot of exercise and sweating, and a large amount of blood loss in a short period of time, which requires replenishing water for the body as soon as possible to make the sunken eye full again; 2. caused by orbital fat atrophy, commonly caused by middle-aged and elderly people, and patients who are excessively thin. As long as the body can be strengthened with nutrition, the volume of fatty tissue in the orbit will be gradually restored, so that the sunken eyes can be improved, or if it cannot be improved, it can be restored through orbital fatty tissue filling surgery; 3.