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    Internal carotid artery aneurysm mimicking normal-tension glaucoma
    (Consel Brasil Oftalmologia, 2018) Pincelli Netto, Mario [UNIFESP]; Ferrari, Pedro Vanalle [UNIFESP]; Herrerias, Bruno Torres [UNIFESP]; Hirai, Flavio Eduardo [UNIFESP]; Gracitelli, Carolina Pelegrini Barbosa [UNIFESP]
    Differentiating glaucomatous from nonglaucomatous optic disc cupping remains challenging. We present a case of a 48-year-old woman with an internal carotid aneurysm of approximately 3.5 mm x 6.5 mm that mimicked normal-tension glaucoma. The patient had a 2-year history of low vision acuity in her left eye and frontal oppressive headache. Owing to the carotid aneurysm, she developed an asymmetric vertical cup-to-disc ratio above 0.2, and marked inferotemporal neuronal rim loss and pallor of the residual rim were noted in the left disc. She also developed a visual field defect with an arcuate scotoma in the left eye. The patient was referred to a neurosurgeon and underwent endovascular aneurysm occlusion. This case highlights the diagnostic importance of recognizing that many neurological defects remain underdiagnosed.