The blue light filter test helps determine whether your blue light glasses really do prevent blue light from being absorbed by the photoreceptors in your eyes, called rods and cones.
To check if your blue light glasses filter blue light, look at the photo above with and without your blue light glasses. What do you see?
Blue Light Filter Test Results
Without your glasses, the right square is supposed to look pale blue, the main square should seem dark blue, and the left court is plain black.
However, if your blue light glasses do block a part of the blue light emitted from the screen, the blue light filter test will show that the right square is sort of turquoise green, while the other two courts are identical in color, which is between really dark blue to black. Furthermore, your screen will change its color as well and will have a sort of orange-red color.
These colors convey that your blue light glasses do filter about half of the blue light, which is released from the sun and digital screens. Many companies who manufacture blue light glasses don’t filter more than 50% of blue light, because you need to absorb some amount of blue light daily. After all, everything is healthy in moderation.
Nevertheless, some people spend so much time in front of technological devices that they might like to consider high-quality blue light filtering glasses, which filter about 80%-90% of all blue light releases from the sun or screens.
If your blue light glasses do filter all or a large amount of blue light, the blue light filter test will show that either all three squares are black or that the right square is green, but the other two left squares are entirely black. Furthermore, your screen will look very red or very green, respectively.
Red filter glasses block all blue and green light, so it could be a little irritating and affect the way you absorb different visual data from the screen. Green or yellow light glasses block only blue light, and by doing so, will shield your eyes from blue light as well, but will allow your eyes to absorb all of the other colors on the visible light spectrum.
By filtering blue light only, you can protect your health and specifically, your eyes and nervous system. Using blue light eyeglasses reduces eye dryness, promotes regular sleeping patterns, and protects your eyes from macular degeneration or damages related to strains on the eyes.
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