I love watching documentaries, but over the last few years, I have really struggled with some of the editing techniques or special effects they use - flashing or fast changing images. Many documentaries use rapidly changing scenes (such as, for exacmple, Chris Packham's Nature's Weirdest Events) or flashing images or white screens flashing at you between shots. They hurt my eyes, or make me dizzy, give me something like vertigo - I can't stand it and sometimes I end up watching the documentary with my eyes closed. It causes me a lot of stress. I don't know why this has started, but it's been getting worse. As a kid, I can't remember having this problem with the TV, but in those days they didn't employ such editing techniques. Or could it be because I'm sensitive to the LED screen? Or is it an aging thing? Though when I ask people of around my age, they don't seem to have this problem, or it's a lot milder.