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    The NADefense Blog

    Learn More About Vision Wellness

    Plain-English guides on eye health, the science behind our ingredients, and how to have better conversations with your ophthalmologist.

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    Dry Eye's Hidden Cause: Your Cellular Cleanup System Dry Eye
    April 27, 2026

    Dry Eye's Hidden Cause: Your Cellular Cleanup System

    Most dry eye treatments address symptoms. A 2025 study reveals the root cause may be inside your tear glands, where a cellular process called autophagy has broken down.

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    NADefense

    Ophthalmologist-founded supplements designed to support long-term vision wellness through targeted cellular nutrition.

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    * These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Sight Guard is a dietary supplement. Consult your physician before starting any supplement regimen.

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