I have now purchased three Ocushield products and love them all! I first purchased the Ocushield for my Macbook. Since I do so much work on it from home at night, I had been unable to sleep well, and my eyes were always hurting. So I thought why not give it a try. And I noticed after a few nights (not weeks) that when I stopped working and went to bed, I fell asleep quickly and woke up refreshed. So, I thought I would try an Ocushield for my iPad. I like to read books on it but after a while, I start getting headaches and I cannot use it late at night. But since adding the Ocushield to my iPad, I am now able to read for long periods and late at night. I can go to sleep almost immediately once I put the iPad down, and don't wake up with headaches or sleep disruptions. Now, I have recently purchased the Ocushield Lamp to use during my daytime work hours. I did receive it but haven't had many opportunities yet to use it. I have used the lamp only a little bit now, but it seems fine. I will be eager to see how well it works during the winter months when I will be using it daily. Thank you, Ocushield developers, for creating products that work as well as advertised.