An 11-year-old boy presented with loss of vision in the left eye following a motor vehicle crash. Clinical examination showed a complete loss of visual acuity (no light perception) and a relative afferent pupillary defect of the left eye that was suggestive of an optic nerve injury. An emergency orbital magnetic resonance imaging scan showed a hyperintense left optic nerve (Figure, A) on T2-weighted imaging. Complementary high-resolution proton density–weighted magnetic resonance images revealed a complete transection of the left optic nerve (Figure, B) localized in the apical part of its intraorbital segment.
Lecler A, Savatovsky J, Cahuzac A. Traumatic Optic Nerve Transection. JAMA Ophthalmol. 2018;136(5):e180490. doi:10.1001/jamaophthalmol.2018.0490
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