RLT Counteracts Age-Related Vision Loss

RLT has been clinically shown to improve vision in older adults.

John Iovine

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The retina ages faster than other organs in the body due to its high metabolic rate. By the age of 70 years olds, approximately 30% of our central rods have dies and our cones have reduced functionality. Recently use of 670 nm red light has been clinically proven to counteract this age-related vision loss. The improvement is only seen in older adults age 40 years old and older. The use of Red Light Therapy (RLT) to treat eye and vision-related issues is nothing new. Red Light Therapy has historically been used in clinical studies to treat:

Age-related Macular Degeneration
Retinal damage in diabetes
Retinitis pigmentosa

Study: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4768515/

This article focuses on the recent developments that use 670 nm red light to counteract age-related vision deterioration.

Two Week Clinical Study with Humans

This clinical study with people was based on previous studies using mice. Researchers gathered 24 people, who ranged in age from 28 and 72 years old. None of the participants were suffering from any eye disease. The researchers tested the vision of the participants to establish a baseline for later comparison when the study was completed.

The human eye has two types of photoreceptors in the retina, cones for color vision and rods for b/w dim light vision. Rods are 500 to 1000X more sensitive to light than cones.

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The tests measured the sensitivity of the cone and rod photoreceptors in the retina. Once the baseline measurements were taken the study began.

Based on previous studies using mice, researchers provided 24 participants with a handheld 670 nm flashlight. The flashlight had a diffuser screen in front of the LEDs, so the participants were not beaming themselves in the eye with direct light from the LEDs.

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John Iovine

Science writer, thinker, self-experimenter, focusing on personal development and health — www.john-iovine.com