Du Ning. According to the information of official website in the Second Hospital of Lanzhou University, the best ophthalmologist in this hospital is Mr. Du Ning, who has many years of treatment experience and won the title of excellent medical staff for many times. The Second Hospital of Lanzhou University (referred to as the Second Hospital of Lanzhou University for short) is a large comprehensive third-class first-class hospital, which is based on Gansu Children's Hospital and integrates medical treatment, first aid, teaching, scientific research, prevention, health care, rehabilitation and health.