Chemosis

• Sweeling of bulbar or tarsal conjunctiva.
• Usually associated with various ocular conditions:
  • Allergic conjunctivitis
  • Conjunctival infection
  • Conjuntival irritation
  • Tissue congestion caused by retrobulbar masses or thyroid orbitopathy

Clinical Features

• Symptoms:
  • Tearing
  • Blurry vision
  • Irritation or itching such as in allergic conjunctivitis
  • Diplopia
  • Sometimes asymptomatic
• Signs:
  • No to severe conjunctival injections
  • Localized or diffuse swelling
  • Incomplete lids closure
  • May cause adjacent corneal changes:
    • Superficial punctuate keratitis
    • Exposure keratitis
    • Dellen formation

Management

• Treatment of underlying condition or disease.
• Surface lubrication.