These work! Under $50 and I don’t get headaches from being on screens all day, and less eye strain. When I first put them on each day I do see the yellow but after 30 seconds that does away and I even walk around my house with them on. The bummer is they only have a handful of styles and these frames are very thick. Not bad but the tops are a bit low for computer work and while you do get used to them, could come in better styles. They are also a tad snug so a wider head would not be comfortable in these. They do not fall down and since I purchased on Amazon did have the option to return if I didn’t like them.