Optic neuropathy caused by nutritional deficiency in a 42-year-old woman with a history of 4 bowel resections who presented with bilateral blurred vision and trouble recognizing colors. Visual acuity was 20/70 OD and 20/200 OS, without an afferent pupillary defect. A, B, Visual field results demonstrate a cecocentral scotoma on the left and a relative central scotoma on the right. C, D, Fundus appearance shows mild temporal optic atrophy OU, with papillomacular nerve fiber layer dropout. After treatment with multivitamins and hydroxycobalamin injections, field defects resolved completely and visual acuity returned to 20/20.