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CES Medicina
versão impressa ISSN 0120-8705
Resumo
LOZANO CRUZ, Edgar; BAUTISTA TORRES, Ana Milena e LOPEZ TORRES, Vanessa. Optic nerve sheath arachnoid cyst simulating glaucomatous defect in the visual field. CES Med. [online]. 2021, vol.35, n.1, pp.44-50. Epub 27-Out-2021. ISSN 0120-8705. https://doi.org/10.21615/cesmedicina.35.1.5.
Background:
Arachnoid cyst is a benign fluid collection similar in composition to cerebrospinal fluid within the arachnoid, circumscribed by normal fibrovascular tissue that compresses the leptomeninges surrounding the optic nerve.
Objective:
To describe the case of a patient with an optic nerve sheath arachnoid cyst with a typical glaucoma campimetric defect, but with an optic disc without findings of glaucoma, to highlight the need to study these cases with neuroimaging to detect this type of changes.
Conclusion:
Optic nerve sheath arachnoid cyst is an exceptional entity that generally has a benign behavior remaining stable over time; but could eventually originate compressive optic neuropathy, affecting visual acuity or visual fields due to nerve fiber layer damage. In the patient´s case this damage was manifested with a visual field defect that simulated glaucomatous neuropathy.
Palavras-chave : Arachnoid cysts; Optic nerve; Scotoma; Glaucoma; Visual fields.