Orbital diseases can be roughly divided into inflammation, tumor, trauma, congenital diseases, metabolic endocrine diseases and parasitic diseases. According to the location, there are two main types: orbital wall lesions and orbital contents lesions.

1. is mostly caused by the spread of inflammatory lesions in adjacent areas, especially sinusitis.

2. Orbital tissue itself is infected, such as orbital trauma or postoperative infection.

3. Caused by systemic infection, such as bacteremia, septicemia, septicemia, etc.

Because of the different nature and location of the lesions, the signs of orbital lesions are very complicated. Exophthalmos is one of the important signs of orbital diseases.