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Homonymous Ganglion Cell Layer Thinning After Isolated Occipital Lesion: Macular OCT Demonstrates Transsynaptic Retrograde Retinal Degeneration
Journal article   Peer reviewed

Homonymous Ganglion Cell Layer Thinning After Isolated Occipital Lesion: Macular OCT Demonstrates Transsynaptic Retrograde Retinal Degeneration

Paolo G Meier, Philippe Maeder, Randy H Kardon and François-Xavier Borruat
Journal of neuro-ophthalmology, Vol.35(2), pp.112-116
06/2015
DOI: 10.1097/WNO.0000000000000182
PMID: 25285723

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Abstract

A 48-year-old man was examined 24 months after medial and surgical treatment of an isolated well-circumscribed right occipital lobe abscess. An asymptomatic residual left homonymous inferior scotoma was present. Fundus examination revealed temporal pallor of both optic discs, and optical coherence tomography (OCT) revealed mild temporal loss of retinal nerve fiber layer in both eyes. No relative afferent pupillary defect was present. Assessment of the retinal ganglion cell layer demonstrated homonymous thinning in a pattern corresponding to the homonymous visual field loss. There were no abnormalities of the lateral geniculate nuclei or optic tracts on review of the initial brain computed tomography and follow-up magnetic resonance imaging. We believe our patient showed evidence of transsynaptic retrograde degeneration after an isolated right occipital lobe lesion, and the homonymous neuronal loss was detected on OCT by assessing the retinal ganglion cell layer.
Magnetic Resonance Imaging Methylprednisolone - therapeutic use Anti-Inflammatory Agents Humans Middle Aged Brain Injuries - complications Male Retinal Degeneration - etiology Tomography, X-Ray Computed Tomography, Optical Coherence - methods Retinal Ganglion Cells - pathology Occipital Lobe - pathology Visual Pathways - pathology Nerve Fibers Retinal Degeneration - pathology

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