Review on PERFECTSIGHT Medical-Grade Screen Protector for iPad Air 4 10.9 inch 2020/ iPad Pro 11 (2021/2020/2018 Model) - NMPA Class 1 Medical Device - Blue Light Filter & 6 Radiations Clear Tempered Glass [1 Pack] by Patrick Brinson

Without an anti-reflective coating, the reflection on this screen is so strong that a person can hardly read the screen unless the brightness is set to maximum. Look at the strong reflection in the picture, today is a cloudy day so the light in the room is not that strong. I wish I had bought one that was glare free to begin with. I can't say for sure the effect on my eyes as they are very bothered by reflection and screen brightness. Installation is tedious, there is no room for a small (submillimeter!) displacement, any displacement and a solid body creates pressure bubbles on the defender. It took me a few tries to make the bubbles small.