What Researchers Did
Researchers reported the first case of blindness caused by cerebral infarctions due to oxygen emboli from hydrogen peroxide ingestion, which was successfully treated with hyperbaric oxygen therapy.
What They Found
A patient who ingested commercial-grade (35%) hydrogen peroxide developed profound vision loss, with imaging revealing gastric wall oedema, gas in the portal venous system, and multifocal embolic infarcts along the visual pathway. Hyperbaric oxygen therapy led to a rapid improvement in visual acuity from hand motion to 20/20 and near-total resolution of visual field loss, even when initiated over 24 hours after symptom onset.
Canadian Relevance
This study has no direct Canadian connection as it reports a single case from outside Canada.
Study Limitations
The primary limitation of this study is its nature as a single case report, which restricts the generalizability of its findings.