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Morning Red Light Viewing
Use red or red-plus-near-infrared light early in the day for brief eye exposure, typically about 1–3 minutes per session from a comfortable distance, a few times per week or daily for short periods. The practice is aimed at adults over 40 with age-related vision decline, and is thought to help photoreceptor mitochondria function better, potentially supporting visual performance and slowing age-related loss.
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“So in our first experiments, we used 670 nanometers, right, which is a deepish red light... And we did that with a little torch that we put in front of someone's eye... And we did that for three minutes.”
huberman · Dr. Glen Jeffery: Using Red Light to Improve Your Health & the Harmful Effects of LEDs · Dec 1, 2025 · 57:06 · open ↗
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