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Updated: Jul 10, 2026

The Rodent Model of Nonarteritic Anterior Ischemic Optic Neuropathy (rNAION)
Published on: November 20, 2016
Sticky platelet syndrome and anterior ischaemic optic neuropathy
Abstract:
We report a young patient who presented with nonarteritic anterior ischaemic optic neuropathy associated with the sticky platelet syndrome (SPS, a congenital prothrombotic disorder). A 15-year-old boy presented with a sudden, painless onset of a right inferior altitudinal visual field defect and marked optic disc oedema. Cranial magnetic resonance imaging (including orbits), orbital ultrasound and haematological investigations including a routine hypercoagulability work-up were negative. Further evaluation showed a positive assay for SPS which was confirmed on repeat testing. The SPS (characterized by platelet hyperaggregability and vascular occlusion) may be a potential thrombophilic risk factor for nonarteritic anterior ischaemic optic neuropathy.
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