Allergic Conjunctivitis

What is Allergic Conjunctivitis?

  • The conjunctiva (the film that covers the eyes) is stimulated by allergens and causes allergic reactions
  • Similar to acute conjunctivitis commonly known as "pink eye", but allergic conjunctivitis is not contagious
  • It may recur repeatedly


  • Allergens in the surrounding environment or the air enter the eyes and cause sensitivity
  • It is also possible that the patient’s immune system is stimulated and has abnormal reactions



  • Itchiness
  • Stinging or burning
  • Excessive tearing
  • Swollen eyelids
  • Severe patients are more likely to damage the conjunctiva and corneal ulcers

High Risk Group

  • Allergic Rhinitis or Eczema
  • Wearing contact lens
  • Allergic constitution (Asthma/Eczema)
  • Family history of allergies


  • Prevent contact with allergens: pollen, dust mites, animal hair, etc.
  • Cold compress eyes: low temperature can constrict blood vessels and reduce allergic reactions
  • Artificial tears without preservatives: flush the allergens in the eyes
  • Drug: Anti-allergy eye drops (containing "antihistamine" or "mast cell stabilizer") *
    *Must be used under the prescription and instruction of an ophthalmologist, and cannot be purchased by yourself

Prevent Allergic Conjunctivitis

  • Keep the home environment clean and use an air purifier
  • Change bed sheets frequently to reduce the accumulation of dust mites
  • Regularly clean the air conditioning system and dust filter
  • Avoid rubbing eyes
  • Get enough sleep

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