Work

Protecting vision with intraoperative visual evoked potentials and tractography in transcortical brain tumor surgery

Year: 2024

Type: article

Abstract: Objective: Intraoperative neuromonitoring (IONM) is nowadays a gold standard during brain tumor resections, but visual function mapping is less frequently performed in clinical practice. This article aims to report two transcortical brain tumor surgery cases affecting optic radiation, where the application of intraoperative visual evoked potentials (VEP) combined with tractography was beneficial to protect the patients' vision. Methods: Two patients with brain tumors compressing the left posterior visual pathways underwent surgery under general anesthesia using IONM and VEP with neurologic improvement and preservation of vision. Results: VEP is beneficial in the surgery of intra-axial lesions affecting the posterior visual pathways (optic radiation, visual cortex) and parasellar lesions involving the anterior visual pathways (chiasm). They can also be effectively combined with other mapping methods such as tractography. Conclusions: According to our experience, IONM with VEPs and neuronavigation with tractography protect visual function in transcortical approaches to resecting tumors near the optic radiation and should be considered a standard monitoring method for such operations.

Source: Romanian Journal of Ophthalmology

DOI: 10.22336/rjo.2024.56

Authors: Ioannis Mavridis, George Tokas, Efstratios-Stylianos Pyrgelis, Theodossios Birbilis

Institutions: Democritus University of Thrace, University Hospital of Alexandroupolis, National and Kapodistrian University of Athens, Eginition Hospital

Language: English

Topic: Intraoperative Neuromonitoring and Anesthetic Effects

Subfield: Surgery

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: green

OpenAlex ID: W4403379538