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Orbital haemorrhage and prolonged blindness: a treatable posterior optic neuropathy.
  1. B Katz,
  2. J Herschler and
  3. D C Brick

    Abstract

    Two patients developed traumatic orbital haemorrhage resulting in prolonged blindness. Orbital decompression successfully reversed the visual loss, though both eyes had no light perception for at least 3 1/2 hours. The clinical findings suggest damage to the posterior optic nerve as cause of the visual loss. The optic nerve tolerance time to ischaemic injury may be longer than previously thought.

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