Thyroid orbitopathy caused optic neuropathy

Case contributed by Fateme Hosseinabadi
Diagnosis almost certain

Presentation

Blindness.

Patient Data

Age: 60 years
Gender: Male
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Info

Bilateral symmetrical fusiform and marked enlargement of extraocular muscle bellies, with sparing of their tendinous insertions and proptosis. Apex crowding caused optic nerve compression. Retrobulbar fat is increased too.

Case Discussion

Apex crowding, in a known case of thyroid orbitopathy, results in optic nerve dysfunction due to optic compression.

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