April 2009
Volume 50, Issue 13
ARVO Annual Meeting Abstract  |   April 2009
Reversible Nyctalopia Caused by Vitamin A Deficiency After Bariatric Surgery
Author Affiliations & Notes
  • P. Kalyani
    Department of Ophthalmology, University of Arizona, Tucson, Arizona
  • Footnotes
    Commercial Relationships  P. Kalyani, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science April 2009, Vol.50, 5315. doi:
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    • Get Citation

      P. Kalyani; Reversible Nyctalopia Caused by Vitamin A Deficiency After Bariatric Surgery. Invest. Ophthalmol. Vis. Sci. 2009;50(13):5315.

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      © ARVO (1962-2015); The Authors (2016-present)

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Purpose: : To describe a patient with severe nyctalopia secondary to Vitamin A deficiency caused by gastric bypass surgery treated with high-dose Vitamin A.

Methods: : Case Report. 38 year-old male who had previous gastric bypass surgery approximately 5 years ago presented with 1 week history of severe night blindness without any visual loss. Patient was evaluated using electroretinography (ERG) which revealed severely reduced scotopic response.

Results: : The patient was treated with intramuscular vitamin A 25,000 IU for 7 days followed by daily supplementation of oral vitamin A 10,000 IU. The patient’s ERG normalized within 8 weeks of treatment.

Keywords: vitamin A deficiency • electroretinography: clinical 

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