What Researchers Did
Researchers at two medical centers reviewed outcomes in 65 patients with central retinal artery occlusion (CRAO), a stroke of the eye, comparing those who completed a full 10-session HBOT course, those who received partial HBOT, and those who received no HBOT.
What They Found
Patients who completed a full HBOT course (twice daily for 5 days) showed significant visual improvement at discharge (p = 0.01, measured by LogMAR visual acuity). Patients who received partial HBOT or no HBOT did not show significant improvement. Only one patient had a seizure during treatment; no other complications were reported.
What This Means for Canadian Patients
For Canadians who experience sudden vision loss from a retinal artery occlusion, completing a full 10-session HBOT course appears essential to getting results, partial treatment does not provide the same benefit. Patients should seek emergency evaluation within 24 hours of vision loss and ask about HBOT availability at their nearest hyperbaric center.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
This was a small retrospective study (65 patients across two centers) with no randomized control group, and patients chose or declined HBOT rather than being randomly assigned.