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Compressive optic neuropathy (CT)

On this axial CT, the apex is seen to be completely crowded out by the rectus muscle bellies. Proptosis, increased orbital fat, and extraocular muscular enlargement are present. (Contributed by Dr. Mark Duffy.)

Associated Disorders

  • Cavernous sinus thrombosis
  • Euthyroidism
  • Extraocular muscle enlargement
  • Generalized autoimmune diseases
  • Graves ophthalmopathy
  • Hashimoto thyroiditis
  • Hypothyroidism
  • Open angle glaucoma
  • Orbital pseudotumor
  • Rhabdomyosarcoma
  • Sarcoidosis
  • Secondary glaucoma
  • Thyroid-associated ophthalmopathy