Allergic conjunctivitis

• Facts:
  Acute hypersensitivity reaction caused by environmental exposure to allergens
• History / PE:
  Intense itching
  Hyperemia
  Tearing
  Conjunctival and eyelid edema
• Treatment:
  Resolves within 24hrs without treatment
• Differential Diagnosis:
  Atopic keratoconjunctivitis (blurry vision)