Visual loss as a late complication of carbon monoxide poisoning and its successful treatment with hyperbaric oxygen therapy.

What Researchers Did

Researchers presented two female patients who experienced visual loss after carbon monoxide poisoning and were successfully treated with hyperbaric oxygen therapy.

What They Found

In Case 1, visual acuity improved from perception of hand movements and finger count to 0.2 in the right eye and 0.15 in the left eye after 48 sessions of HBO therapy. In Case 2, visual acuity improved from 0.2 in the right eye and 0.1 in the left eye to 0.7 in both eyes after 35 sessions of HBO therapy, with normalized visual fields.

Canadian Relevance

This study has no direct Canadian connection as it was conducted in Switzerland and does not involve Canadian researchers or participants.

Study Limitations

A significant limitation of this study is its small sample size, involving only two case reports, which limits generalizability.