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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Blue Light and Your Retina: What the 2026 Science Actually Shows Blue Light
June 02, 2026

Blue Light and Your Retina: What the 2026 Science Actually Shows

Blue light research took a significant step forward in 2026. Three new studies pinpointed exactly how it damages retinal cells at the mitochondrial level. Here is what the...

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Lutein Is in Your Eyes. It Is Also in Your Brain. Blue Light
April 15, 2026

Lutein Is in Your Eyes. It Is Also in Your Brain.

Lutein concentrates in both your retina and your brain. Here is what the research says about how it supports vision and cognition, and how much you actually need.

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It Is Not Your Screen. What Is Really Driving Nearsightedness. Blue Light
April 09, 2026

It Is Not Your Screen. What Is Really Driving Nearsightedness.

A February 2026 study from SUNY College of Optometry proposes myopia is driven by prolonged close-up focus in dim indoor lighting, not screens or blue light. Learn what...

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