Related Experiment Video
Updated: Jun 1, 2026

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation
Published on: December 8, 2023
Junctional visual field loss in a case of Wyburn-Mason syndrome
Anthony Liu1, Yi-Wen Chen, Steven Chang
1Department of Ophthalmology, Stanford University School of Medicine, Stanford, CA 94303, USA.
Abstract:
A previously healthy girl failed a routine eye screening at the age of 6 years. Her visual fields showed generalized depression in the right eye and a superotemporal defect in the left eye, consistent with a junctional scotoma. Funduscopic examination and fluorescein angiography revealed markedly dilated tortuous vascular loops with arteriovenous communications consistent with retinal arteriovenous malformations (AVMs). MRI of the brain and cerebral angiography demonstrated right ophthalmic and right thalamic AVMs, with compression and atrophy of the right optic chiasm. This represents a case of Wyburn-Mason syndrome with a junctional scotoma.
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