Review on 👁️ Amazon Basics Privacy Screen Filter - 22 Inch 16:9 Widescreen Monitor: Anti-Glare & Blue Light Filter – Enhance Visual Privacy and Reduce Eye Strain (22 inch (16:9), 18.76" x 10.56") by Donald Waller

Reviewing the information, I was hesitant to buy at first, but took a chance based on the generally good reviews, reasonable price and the "Revain Basic" brand. Very easy installation and I don't even need to use the supplied adhesive strips as the screen will stick to the laptop screen by itself (make sure you follow the instructions on how to deep clean the screen before doing this). The manual clearly shows the "visible" angle range until the "privacy" feature takes effect. Simply put, if you look directly at the laptop screen, you can see everything. However, if you step to the side, you cannot see ANYTHING. To be honest, I don't know if there really is an absolute privacy screen on the market. if so, I'm sure it must be expensive, and only financial institutions can afford it. In terms of brightness, it dims the screen a bit, as expected, but organically calms my vision. In my opinion, this product is sufficient for normal everyday use and at a good price.