i have been using the blue light blocker glasses for years and was very happy with them.
i recently purchased the book light for the times where i am staying away from home and want the soft lighting instead of the bright hotel room bedside lamps (that wake you up from your deep sleep when you get up to go to the bathroom, making it harder to go back to sleep)
i lent my light to a friend who found it greatly helped her sore, weeping eyes, she felt the light was very soothing and not harsh on her eyes at all, making her evening reading more pleasant. she liked it so much that i had one sent to her in the mail as a present. Block Blue Light was very accommodating in my request to have it sent to my friend in the mail.