Congenital Achiasma

Abstract: In evaluating a 3-month-old boy with horizontal nystagmus, brain MRI revealed absence of the optic chiasm. The remainder of the brain was normal in appearance. Achiasma was confirmed with diffusion tensor imaging and best visualized with optimized probabilistic-based tractography. Address correspondence to Augustin Lecler, MD, MSc, Department of Radiology, Fondation Ophtalmologique Adolphe de Rothschild, 25 rue Manin, 75019 Paris, France; E-mail: alecler@for.paris The authors report no conflicts of interest. © 2018 by North American Neuro-Ophthalmology Society

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