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Related Experiment Video

Updated: Apr 18, 2026

Roux-en-Y Gastric Bypass Operation in Rats

Roux-en-Y Gastric Bypass Operation in Rats

Published on: June 11, 2012

Nutritional optic neuropathy following bariatric surgery.

Anna Sawicka-Pierko¹, Iwona Obuchowska¹, Razak Hady Hady²

¹Department of Ophthalmology, Medical University of Bialystok, Bialystok, Poland.

Wideochirurgia I Inne Techniki Maloinwazyjne = Videosurgery and Other Miniinvasive Techniques

|January 7, 2015

Summary

Bariatric surgery can cause nutritional optic neuropathy (NON), a vision impairment. Prompt vitamin B12 treatment effectively resolved NON symptoms in a patient post-sleeve gastrectomy.

Keywords:

nutritional optic neuropathy sleeve gastrectomy vitamin B12 deficiency

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Area of Science:

Ophthalmology
Gastroenterology
Nutritional Science

Background:

Bariatric procedures can lead to malabsorption of essential nutrients.
This malabsorption is a potential risk factor for developing nutritional optic neuropathy (NON).

Observation:

A 34-year-old female developed bilateral NON 10 months after sleeve gastrectomy.
Symptoms included decreased visual acuity, visual field loss, and abnormal visual evoked potentials.
Laboratory tests revealed a low serum vitamin B12 concentration (161 pg/ml).

Findings:

Treatment with daily intramuscular vitamin B12 injections (1000 units) was initiated.
Within one week, serum vitamin B12 levels increased over threefold.
Complete resolution of bilateral NON symptoms was observed.

Implications:

The rising number of bariatric surgeries may increase the incidence of NON.
Long-term ophthalmological follow-up is crucial for patients undergoing bariatric procedures.
Proactive vitamin and microelement supplementation is recommended post-surgery.