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Clinical Study The British journal of ophthalmology 2004

Diameter variations of retinal blood vessels during and after treatment with hyperbaric oxygen.

Vucetic M, Jensen PK, Jansen EC — The British journal of ophthalmology, 2004

View Original on PubMed PMID 15148210
Tier 2, Indexed

Automatically imported from PubMed based on relevance criteria.

Summary

What Researchers Did

Researchers quantified retinal vascular changes in three patients undergoing hyperbaric oxygenation by measuring blood vessel diameters from fundus photographs taken before, during, and after treatment.

What They Found

Breathing 100% oxygen at 2.5 ATA caused retinal arterioles to constrict by 9.6% (SD 0.3%) and venules by 20.6% (SD 0.3%) of their size in air. Ten minutes after hyperbaric oxygen, arterioles dilated to 94.5% (SD 0.3%) and venules to 89.0% (SD 0.3%) of their primary size, a pattern consistent across measurement days.

Canadian Relevance

This study has no stated Canadian connection.

Study Limitations

A significant limitation of this study is the very small sample size of only three patients.

This plain-language summary is generated with AI assistance and checked against the source abstract before publication. See our editorial policy.

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Study Details

Study Type Clinical Study
Category Cardiac
Source Pubmed
PubMed ID 15148210
Year Published 2004
Journal The British journal of ophthalmology
MeSH Terms Aged; Analysis of Variance; Arterioles; Densitometry; Female; Humans; Hyperbaric Oxygenation; Image Interpretation, Computer-Assisted; Male; Middle Aged; Ophthalmoscopes; Retinal Vessels; Vasoconstriction; Venules

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Disclaimer: This study summary is provided for informational and educational purposes only. It does not constitute medical advice. The information presented reflects the findings of the original research authors and may not represent the views of Canada Hyperbarics. Always consult a qualified healthcare professional before making treatment decisions.

Last reviewed: April 2, 2026 | Reviewed by: Canada Hyperbarics Editorial Team | Editorial process | Research sources | Counts & methodology