What Researchers Did
Researchers conducted a two-part study to determine if bubbles observed in the eyes after hyperbaric exposure are caused by nitrogen leaving the body and to track how long this process takes.
What They Found
They found that the number of tear film bubbles significantly increased after subjects breathed air during dives to 2.0 ATA for 60 minutes, but not when they breathed pure oxygen. Similarly, reflectivity in the back of the eye increased after air dives but not oxygen dives, confirming nitrogen as the cause. Tear film bubbles remained elevated for at least two days after certain simulated dives.
What This Means for Canadian Patients
This research helps us understand how the body releases nitrogen after hyperbaric exposure, which is important for preventing or treating decompression sickness. For Canadian patients, especially divers, these findings suggest that eye examinations could potentially offer a non-invasive way to monitor nitrogen levels in the body after a dive. Understanding these processes can contribute to safer diving practices and more effective management of decompression-related issues.
Canadian Relevance
While the study authors and location are not identified as Canadian, the research covers decompression sickness, which is a Health Canada-recognised indication for hyperbaric oxygen therapy.
Study Limitations
The study involved a small number of participants (n=8 for each part), and the full results for the second part of the study were not provided in the abstract.