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.
What This Means for Canadian Patients
Canadian patients experiencing delayed visual loss following carbon monoxide poisoning might benefit from hyperbaric oxygen therapy, even if symptoms appear days after exposure. This treatment could potentially improve visual acuity and field defects, offering a therapeutic option for a serious complication.
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.