Orbital infarction syndrome secondary to rhino-orbital mucormycosis in a case of COVID-19: Clinico-radiological features.

Orbital infarction syndrome is an uncommon pathology with devastating consequences. It is frequently secondary to atherothrombotic phenomena in the internal carotid artery. We report a case of a 66-year-old male with uncontrolled diabetes and use of systemic steroids for COVID-19, who presented with a sudden loss of vision in the left eye, with total ophthalmoplegia and diffuse opacification of the retina. On imaging, he was found to have features of rhino-orbital cellulitis with ischemia of the orbital tissue secondary to isolated ophthalmic artery obstruction (OAO) with a patent internal carotid artery. KOH mount of deep nasal swab was confirmatory of mucor. This is the first reported case of orbital infarction syndrome in the setting of COVID-19.