Types of Uveitis

Based on which part of the eye is primarily involved, there are several types of uveitis:

  • Anterior uveitis (if the inflammation is predominantly at the front part of the eye) – Most common type of uveitis
  • Intermediate uveitis (if the inflammation is primarily in the middle part of the eye) – Includes pars planitis
  • Posterior uveitis (if the inflammation is primarily in the back part of the eye)
  • Panuveitis (if the inflammation involves all parts of the eye)

Causes of Uveitis

In most cases, the etiology remains unknown. However, uveitis may result from various different causes, including:

  • Genetic factors
  • Autoimmune diseases, such as rheumatoid arthritis (RA), ankylosing spondylitis (AS)
  • Infection (Virus, fungus, parasite)
  • Toxins
  • Trauma
  • Surgery

Studies have shown that smoking is a risk factor for uveitis and is associated with a dose-dependent increased rate for some of its complications.