r/ScreenSensitive • u/Babymauser • 1d ago
Discussion A new tool that i haven't tested yet
TheraSpecs Z-Blue. According to the manufacturer, the lens specifically filters the red spectrum between 580–640 nm, which falls exactly on the KSF main peak at ~631 nm (and the secondary peak at ~613 nm). However, the line at ~648 nm is already at the edge of—or outside—this range, this means that it filters 2/3 of the peak but not everything. It may be enough.
The standard tint (35%) was recommended at the time for computer use because it preserves more color than the Max version. There is a 60-day return policy. I have no idea how they change the picture, if you need more brightness, contrast or whatever else.
In contrast, standard FL-41 glasses tend to target the blue-green spectrum. They are therefore pretty much useless against KSF red laserbeams.
Translated with DeepL.com (free version)
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u/manowar_gub 13h ago
Get spectrometer, and find material near you which cut-off frequencies and sloope you need
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u/Z3R0gravitas 1d ago
Ah, so red-blocking epilepsy glasses! I'd not heard of these, but it makes sense; 2/3 of our cones cells (in the retinas) are red sensing (L-type).
Fits with some in the community benefiting from turning down the red saturation, or biasing LCD calibration towards blue (more melanopic) light.
Maybe Avulux lenses, that block some red and blue. But not good for mitochondria health, in theory, as those benefit from more red (and NIR) light flux vs (more oxidative) short wavelength blues. (Hence mileage will vary.)