What Researchers Did
Doctors treated six patients who had sudden blockages in the blood vessels of the retina (central retinal artery or vein occlusion) with hyperbaric oxygen therapy.
What They Found
This case series of six patients treated with hyperbaric oxygen reported that three of them, including the one case of central retinal vein occlusion, had near to complete restoration of their vision. One additional case showed marked improvement. The authors note this pattern is similar to other published case reports, which found roughly 65 to 70 percent of patients treated for central retinal artery occlusion improved.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
This is a small case series of only six patients with no comparison group, so it cannot establish that hyperbaric oxygen caused the improvement rather than natural recovery or other factors.