Harmony Rose FL-41 Wayfarer Migraine Glasses – Black
Part of the Harmony Rose FL-41 lens collection
A rose FL-41 tint in a classic Wayfarer frame, for people who find ordinary indoor lighting hard work.
FL-41 does something different from our sleep lenses. Rather than darkening everything, it takes out a narrow band between 480 and 520nm — the part of the spectrum most associated with discomfort under fluorescent and LED lighting — and leaves the rest bright. Independently lab-tested at 48% filtering across that band with 67.6% visible light transmission, it's a Category 1 lens you can wear indoors all day rather than only in the evening. Not a lens for driving after dark.
A note on what this is and isn't. FL-41 tints have been used for light sensitivity for decades and there is real clinical literature behind them, but these are not a medical device and not a treatment. If you have persistent headaches or changes in your vision, please see an optometrist or a doctor — a tinted lens is not a substitute for that appointment.
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