This filter definitely helped improve clarity of my monitor. However, if there is any light source behind you, it will only increase your glare problem. This model is not made for glare originating outside of the monitor, only for glare coming from your monitor. My outside glare sources (office light, and window) are not directly behind me so it isn't a huge problem for me, which is why I gave it four stars. Bottom line: Buy only if you have a wall behind you. Also, it seems to be made for older monitors that are at least 2" thick.