I can't say for sure but I'm pretty sure I fall asleep faster using these glasses while sitting at the computer late at night. They are comfortable to wear but make everything darker and colors look different. I had to take them off for a snack because green raw vegetables looked gray and unattractive. I use them mostly when answering emails and reading my computer late at night when everything is black and white, or with glasses they look black and pale yellowish white. Colors look slightly different on TV, but I don't see that as a problem. I don't mind if the character wears a green shirt instead of a blue one. People's faces look normal, like everything else.
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