What Researchers Did
Japanese researchers compared three treatments for central retinal artery occlusion, standard conservative care (eye massage and nitroglycerin), HBOT at 2 ATA for 60-minute sessions, and endovascular retinal surgery, by reviewing outcomes in 34 patients treated at one hospital.
What They Found
Conservative treatment showed no significant vision improvement (from 1.96 to 1.88 logMAR, p = 0.56). HBOT produced a significant improvement (from 1.79 to 1.28 logMAR, p = 0.007). Endovascular surgery showed the most dramatic improvement (from 1.98 to 0.68 logMAR, p < 0.0001), with outcomes significantly better than both other groups.
What This Means for Canadian Patients
For Canadians experiencing sudden vision loss from a retinal artery occlusion, both HBOT and endovascular surgery offer meaningful improvement over conservative treatment alone. HBOT is more widely available than endovascular retinal surgery and should be considered an urgent option, especially when surgery is unavailable.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
With only 11 HBOT patients, 13 conservative, and 10 surgical patients, this study is too small to definitively rank these treatments, and patients were not randomly assigned to groups.