Yeah, it can. And I would know, because it's happened to me. I fell backwards when I was sparring in Karate/Tae Kwon Do. It was a stupid demonstration thing that all of us Black Belts had to do. I was sparring against a boy a couple years older than me, and I beat him. Right after that, though, when I had just taken off my headgear, he "accidently" hit me while I was completely off-guard, and I fell straight back. I missed school for three months because I was having double and triple vision. Even now, about 5 years later, I still have severe headaches, and every now and then, my vision gets blurry. I'm just happy that it didn't
permanently affect my vision. Besides those occasional "blurry" times, my vision is perfect. : ) So, that's just personal experience talking. I really wouldn't know how strong of a blow your head would have to take for your eyesight to be affected. ^^
Destroyer2000 wrote:Hm...would having your head hit by a car door that was being slammed shut do it? It gave me a headache, and a bump, but I didn't pass out or anything. It hit my temple...I think that's how you spell it.
Uh... ouch... I would advise seeing a doctor. Just to be sure.