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Congenital achiasma and see-saw nystagmus in VACTERL syndrome
Saurabh Prakash1, Serge O Dumoulin, Nancy Fischbein
1Department of Ophthalmology, Stanford University School of Medicine, Stanford, California, USA.
Abstract:
A 29-year-old man with vertebral defects, anal atresia, cardiac defects, tracheoesophageal fistula, renal defects, and limb defects (VACTERL) presented with headache, photophobia, and worsening nystagmus. He had near-normal visual acuity and visual fields, absent stereopsis, and see-saw nystagmus. Brain MRI revealed a thin remnant of the optic chiasm but normal-sized optic nerves. Functional MRI during monocular visual stimulation demonstrated non-crossing of the visual evoked responses in the occipital cortex, confirming achiasma. These findings have not previously been reported in VACTERL.
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