I read a few hours last night without any eyestrain. My term "fuzziness" wasn't a good one, but I'm not sure exactly how to describe it in words. The words and letters remain sharp but their is a slight noticeability that something is now on top of the screen between my eyes and the text. But the longer I read the less I noticed it. I suspect that after a few days I will no longer notice it as my eyes adjust to reading with the anti-glare screen protector on.