II. Definitions

  1. Hypopyon
    1. Layering out of White Blood Cells in anterior chamber
  2. Pseudohypopyon
    1. Neoplastic cell accumulation in the anterior chamber
    2. May occur with Lymphoma, Leukemia or Retinoblastoma
    3. Evaluated with flow cytometry of the anterior chamber aspirate

III. Causes

  1. Endoophthalmitis
  2. Anterior Uveitis
  3. Corneal Ulcer
  4. Behcet's Disease
    1. Causes an Anterior Uveitis, of which 10-30% of patients develop a Hypopyon

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