Blue Light Screen Protector for 23-24 Inch LED PC Monitor, Scratch-Resistant Computer Screen Blue Light Blocker, Filter - 2 Pack (W 21.3" x H 13.4")

Just got this today and they work great. a blue light tester is included.

As soon as hung it over the monitor I could feel my eyes relaxed. All day today my eyes did not feel tired.. It was a perfect size. I recommend this product.

I bought this item because the blue light from the overly bright screen was hurting my eyes, and I can tell the eye strain is down now. However, this screen is NOT matte, so it reflects everything in the room and all the light sources just glare right back at me from the screen. I also get tired of staring at my own reflection and everything in the room all day long.I'll probably be returning this item if I can find a decent alternative. If you don't mind the glare, the item is great. It covers my screen perfectly, and I take it on and off any time. My extra camera also fits nicely right on top of it, so very easy to install and take on and off.PROs:- easy to install;- looks good;- fits perfect to my 23.8, 9:16 monitor;- you can put an external camera on top of it.CONs:- too much reflection- doesn't darken the screen

Muy buen producto y buena calidad. Funcional

I was having so much eye pain and irritation after work everyday, I put this on my monitors and problem solved. I do still get the feeling of my eyes being tired, but nothing like before that I literally had to use eye drops and close them cause I couldn't stand bright lights anymore.

Appears to work, but in order to use it on my HP All-in-One I had to carefully place the hanging clips beyond the edges on the sides, then rest them on top of the display. The clips aren't wide enough to hang over the display, and if they were, they'd block some of the ventilation shots. That also means that the HP pop-up camera sees a line through the middle of its video, so I have to remove the screen for things like Zoom meetings & teaching. (Face recognition still works.) Brightness is affected a little, but not much. I have no idea how effective it is in filtering the relevant blue spectrum.

There is considerable glare. The instructions and enclosed items do not match the product. The manufacture's name of this item is not given on any of the enclosed...no phone number, no email address, no mention of the nation of its origin. The entire item and enclosures are useless and not comprehensible. I found it useless. A waste of money.

I had IOL surgery and my eyes just killed me working on my work computer. Headaches all the time!! After ordering this and using it, no more eye strain or headaches. Well worth the money. I even broke down and ordered one for my home computer monitor.