Hollow eyes may be caused by fat shrinkage, dehydration, trauma, etc. They can be treated by fat filling, hyaluronic acid injection and surgery. 1. Fat-filling and hyaluronic acid injection: Generally, old people will have sunken eyes due to the reduction of subcutaneous fat layer caused by ageing, which leads to fat atrophy. In addition, weight loss or consumptive diseases cause orbital fat to decrease, which can also lead to sunken eyes. You can go to the hospital for autologous fat filling to restore fullness, or hyaluronic acid injection to restore. 2. Massage to replenish water: when the body is dehydrated or long-term visual fatigue, so that the blood circulation around the eyes deteriorates, the blood circulation around the eye tissues perfusion is relatively low, resulting in eyes concave in. It can be relieved by improving blood circulation around the eyes and improving muscle tone through local massage, hot compresses and supplemental water. 3. Surgery: After the eyes have been traumatized, such as orbital burst fracture, which causes the eyeball or the tissues inside the eye to sink downward into the maxillary sinus cavity, the eyes will appear obvious concave, through the orbital fracture repair surgery, the implantation of orbital titanium plate, so that the eyes will return to normal. If your eyes are sunken in, you should go to the eye hospital as soon as possible for a detailed examination and treatment according to the cause.