A short burst of red light in the morning has been shown to improve declining eyesight, researchers report, potentially providing a simple, safe, and easy-to-use treatment for keeping our eyes sharper as we head into old age.
In tests on 20 participants exposed to three minutes of 670 nanometer deep red light in the morning between 8 am and 9 am eyesight improved by 17 percent and lasted (at a lower level) a week on average. In some of the volunteers, the improvement was as much as 20 percent.
This link between long wavelength red light and improving vision matches up with what scientists have seen in previous studies on animals, and the study follows on from a similar one carried out last year – but in this case, the red light was limited to a single, daily exposure that required less red light energy than previously.
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Declining Eyesight Could Be Given a Boost by Short Morning Doses of Seeing Red
