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Updated: Apr 28, 2026

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
Acute visual loss: just the beginning?
Ayse Ilksen Colpak1, Ilkay Isikay2, Melike Mut2
1Institute of Neurological Sciences and Department of Neurology, Neuro-ophthalmology Unit, Hacettepe University, Sihhiye, Ankara, Turkey.
Abstract:
A 47-year-old man presented with sudden visual loss, optic disk edema, retinal ischemia, and limited upgaze in the left eye. Initial MRI revealed thickened, enhancing left optic nerve. Extensive work-up for an inflammatory and infiltrative etiology was positive only for Borrelia burgdorferi IgM by Western blot. Six weeks later the patient had numbness and weakness on his left side. MRI showed enhancing lesions extending from the left optic nerve to the optic chiasm, along the visual pathways bilaterally, mainly on the right side from optic tract to lateral geniculate body and pulvinar. Stereotactic biopsy of the right pulvinar lesion revealed glioblastoma. The tumor progressed rapidly, and the patient died 11 weeks after the onset of first symptoms.
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