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Related Experiment Videos

The closed eye environement: pH.

R M Hill, L G Carney

    American Journal of Optometry and Physiological Optics
    |November 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    The pH of eye bathing media becomes more acidic when held against the eye in a closed chamber. However, the pH shift in a naturally closed eye remains within 1 pH unit of the open-eye average.

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    Area of Science:

    • Ophthalmology
    • Physiological optics
    • Biophysics

    Background:

    • Unbuffered bathing media in closed chambers against the eye become acidic over time.
    • Previous studies indicated potential pH shifts in ocular environments.

    Purpose of the Study:

    • To investigate the pH changes in the ocular environment of a naturally closed eye.
    • To compare pH shifts in closed-eye conditions versus open-eye measurements.

    Main Methods:

    • Utilizing a closed chamber system to hold unbuffered bathing media against the eye.
    • Measuring pH shifts over time in naturally closed eyes.
    • Comparing measurements with open-eye average pH values.

    Main Results:

    • Progressive acidification of bathing media was observed in closed chambers.

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  • pH shifts in naturally closed eyes were minimal, staying within 1 pH unit of open-eye averages, even during prolonged periods.

    • Conclusions:

    • The ocular surface environment demonstrates resilience to significant pH changes under natural closure.
    • The eye's physiological mechanisms effectively buffer against substantial acidity shifts during normal closure.