229
people found this helpful, as of 2023
ranked #131,268 most helpful
out of 571,544,897 reviews
★★★★★
I took this glass to my optometrist, who examined ...
I took this glass to my optometrist, who examined the blue light blocking performance of this product.
He was also motivated by curiosity on effectiveness of a device costing this low.
He tested it on a large machine in his office, and told me that it blocks blue light 100%.
End of story.
January 2018 · Tools and Home Improvement · verified purchase