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Influence of diet on tear function.

B E Caffery

    Optometry and Vision Science : Official Publication of the American Academy of Optometry
    |January 1, 1991
    PubMed
    Summary
    This summary is machine-generated.

    Diet significantly impacts tear function, with deficiencies in certain nutrients and excesses of others potentially causing dry eye. However, diet

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    Area of Science:

    • Ophthalmology
    • Nutrition Science
    • Dietary Research

    Background:

    • Malnutrition-induced xerophthalmia demonstrates diet's effect on tear function.
    • Dietary habits in North America are linked to tear dysfunction.
    • Existing literature suggests specific nutrient requirements for normal tear function.

    Purpose of the Study:

    • To review the ocular literature on the relationship between diet and tear function.
    • To identify nutrients essential for normal tear production.
    • To explore dietary components potentially causing tear dysfunction.

    Main Methods:

    • Literature review of ocular studies.
    • Analysis of dietary factors associated with tear health.
    • Examination of nutrient roles in tear film stability.

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    Main Results:

    • Sufficient protein, vitamins A, B6, C, potassium, and zinc are necessary for normal tear function.
    • Excess dietary fats, salt, cholesterol, alcohol, protein, and sucrose are associated with tear dysfunction.
    • No definitive link between diet and dry eye remission in well-nourished individuals was found.

    Conclusions:

    • Diet plays a crucial role in maintaining normal tear function.
    • Specific nutrient imbalances can lead to or exacerbate dry eye conditions.
    • Further research is needed to establish clear dietary guidelines for managing dry eye in well-nourished populations.