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Related Experiment Videos

Human ocular aging and ambient temperature

R A Weale

    The British Journal of Ophthalmology
    |December 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    The age of onset for presbyopia varies globally, with ambient temperature, not latitude, being the likely environmental factor. This suggests the eye's crystalline lens proximity to the body's surface influences the condition's development.

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    Area of Science:

    • Ophthalmology
    • Environmental Health
    • Epidemiology

    Background:

    • Presbyopia, an age-related condition affecting near vision, exhibits significant global variations in its age of onset.
    • Previous hypotheses suggested a correlation between presbyopia onset and geographical latitude.

    Purpose of the Study:

    • To investigate the environmental factors influencing the age of onset of presbyopia worldwide.
    • To differentiate between geographical latitude and ambient temperature as potential determinants.

    Main Methods:

    • A comprehensive literature survey was conducted on existing studies regarding presbyopia onset incidence.
    • Statistical and epidemiological evidence was analyzed to identify correlations with environmental factors.

    Main Results:

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    • Significant global variations in the age of onset of presbyopia were confirmed.
    • Geographical latitude was statistically ruled out as a primary correlating factor.
    • Ambient temperature emerged as a more probable environmental influence on presbyopia onset.

    Conclusions:

    • Ambient temperature is a more likely determinant of presbyopia onset age than geographical latitude.
    • The crystalline lens's proximity to the body surface may explain the influence of ambient temperature.