What Researchers Did
Researchers documented the eye changes in a 26-year-old man who was in a coma after carbon monoxide poisoning.
What They Found
They observed that a 26-year-old man, comatose from carbon monoxide poisoning, developed swollen retinal veins and bleeding around the optic nerve. These eye changes were similar to those seen when the body is deprived of oxygen.
Canadian Relevance
Although this study was not conducted in Canada, it covers carbon monoxide poisoning, which is a Health Canada-recognised indication for hyperbaric oxygen therapy.
Study Limitations
As a single case report, this study's findings may not apply to all patients with carbon monoxide poisoning.