Related Experiment Video
Updated: Feb 15, 2026

Single-unit In vivo Recordings from the Optic Chiasm of Rat
Published on: April 2, 2010
Retinitis Pigmentosa Sine Pigmento Mimicking a Chiasm Disease
Francesco Pellegrini1, Giovanni Prosdocimo1, Francesco Romano1
1Neuro-Ophthalmology Service, Department of Ophthalmology, Conegliano Hospital, Conegliano (TV), Italy.
Abstract:
A 75-year-old woman presented to her ophthalmologist complaining of visual loss for several years. The ophthalmic examination was remarkable for a bitemporal visual field defect. Magnetic resonance imaging (MRI) scan of the brain was normal without evidence of chiasm compression. Neuro-ophthalmic examination was consistent with a retinal rather than a chiasmal disease. Retinal multimodal imaging helped in the correct diagnosis of retinitis pigmentosa, later confirmed by genetic testing.
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