this post was submitted on 06 Nov 2025
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Looking for blue-light blocking glasses for sleep? (reddthat.com)
submitted 1 week ago by PumpkinDrama@reddthat.com to c/buyeuropean@feddit.uk
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Iโ€™m trying to find a pair of blue-light blocking glasses to use before sleep โ€” ideally something that blocks a lot of blue light (orange or red tint is fine) and gives full coverage around the eyes (wide or wraparound styles).

Does anyone know a good model I could buy from Spain?

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[โ€“] cyborganism@lemmy.ca 1 points 6 days ago

Visible light synchronizes the human biological clock in the suprachiasmatic nuclei of the hypothalamus to the solar 24โ€hour cycle. Short wavelengths, perceived as blue color, are the strongest synchronizing agent for the circadian system that keeps most biological and psychological rhythms internally synchronized.

Source

Circadian rhythms are finely tuned, 24-hour cycles that signal our bodies to carry out essential functions , including sleep. Light is the most important factor in aligning circadian rhythms and, for much of human history, these rhythms were closely aligned with sunrise and sunset .

With the advent of artificial light and electronics, people are being exposed to increased amounts of light before bedtime. While all types of visible light can affect circadian rhythms, blue light has the largest impact .

Source

And from personal experience, I find blue light extremely aggressive at night and having a red filter really helps.