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Hyperoxic myopia

B Anderson, J C Farmer

    Transactions of the American Ophthalmological Society
    |January 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    High oxygen exposure caused temporary myopia in patients. This refractive change, linked to lens metabolism, resolved after oxygen cessation, indicating reversible vision changes.

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    Area of Science:

    • Ophthalmology
    • Physiology
    • Biomedical Research

    Background:

    • Hyperoxia, or elevated oxygen levels, is used in various medical settings.
    • The effects of prolonged hyperoxia on ocular physiology are not fully understood.
    • Previous research has not extensively explored hyperoxia-induced refractive changes.

    Purpose of the Study:

    • To investigate the impact of hyperbaric hyperoxia on refractive error.
    • To determine if oxygen exposure can induce myopia.
    • To explore the reversibility of induced myopia.

    Main Methods:

    • A group of patients underwent repetitive oxygen breathing at two atmospheres absolute pressure.
    • Refractive error and corneal curvature were measured before, during, and after hyperoxic exposure.

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  • Patient vision was monitored for three months post-exposure.

    • Main Results:

    • A consistent 1.6 diopter increase in myopia was observed in patients exposed to hyperoxia.
    • No significant alterations in corneal curvature were detected.
    • The induced myopia resolved gradually within three months after discontinuing oxygen exposure.

    Conclusions:

    • Repetitive hyperbaric hyperoxia can induce a temporary, significant myopic shift.
    • The mechanism is speculated to involve alterations in adult lens metabolism, increasing its refractive power.
    • The observed myopia is reversible, suggesting a non-permanent effect on ocular structures.