Review on 21.5 Inch Diagonal LED Monitor Anti-UV Eye Protection Filter Film With Blue Light Blocking Technology - Widescreen Frame Hanging Type by Steve Cooper

I liked this product since it DIDN'T attach directly to the screen. Installation was easy - I found holding on to the top "hook" portion of the filter and pulling the protective covers off didn't get any fingerprints on the filter. I also bought one for my work computer (since I couldn't directly attach a filter to that screen since I don't own the computer). It filters the narrow blue range well. It doesn't affect any of the colors (and blue looks blue). I had previously purchased a set of blue tint glasses (https://smile.amazon.com/dp/B07FDX6DR8?psc=1&ref=ppx_yo2ov_dt_b_product_details) - the glasses filter more than these screen filters. I find the glasses produce less eye strain - I just don't like wearing glasses, so I only wear them on days that my eyes are more sensitive than normal. Also, you may want to get a lint-free cloth to lay over your laptop keyboard so you don't have to worry about closing the laptop and having the keyboard keys scratch the screen filter.