I know photography and I know how cheap lenses and coatings soften images. These glasses are of poor quality. Why don't you just try it out, viewing and comparing some fonts on a high-quality monitor with and without glasses. I would rate these glasses as making your vision 10% softer than your normal visual acuity. Also, the test card comes as a blue laser flashlight test card, it's actually a UV light test, not a blue light test. I tried it on different sunglasses and they all passed the test. These glasses have a green coating, it's part of the green light and makes everything appear a bit magenta. I don't think they block blue light, or at least I'm not sure they block blue light.
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