Traumatic chiasmopathy following mild trauma in a patient with thyroid orbitopathy

• DOI: 10.1016/j.ajoc.2021.101021
• Publication Date: 2021-01-23T16:27:13Z
• Authors: Matthew L. O'Sull...; Sidney M. Gospe
• Keywords: Optic chiasm; Hemianopsia

Traumatic injury to the optic chiasm is rare and most frequently caused by high-velocity head trauma. It classically results in bitemporal hemianopsia often presents conjunction with multiple other traumatic injuries, such as skull fractures cerebrospinal fluid leaks. We present case of a 40-year-old woman pre-existing thyroid orbitopathy who struck her forehead after fall from standing height.This patient suffered immediate profound unilateral vision loss neuropathy possible nerve avulsion. The fellow eye manifested temporal delayed retinal fiber layer nasal hemimacular ganglion cell thinning on optical coherence tomography, consistent chiasmal pathology. Magnetic resonance imaging showed no definitive lesions at or more posteriorly along afferent visual pathway.This patient's severe suggests that proptosis can sensitize anterior pathway In this case, we propose lack laxity intra-orbital nerves allowed transmission stretching forces setting low-velocity blunt