yes you can
I say you would have to lose half of your blood to lose consencnes, not sure about eyesight
never
you lose sight
No
For helping helen the little girl that was blind
No
yes but you get it back
You will lose that heightened response in due course of time. This is the normal course of action. There can be exceptions to this.
Clara Barton temporarily lost her eyesight due to nervous exhaustion but she recovered a few years later.
He did not lose his sight; his eyesight is poor, and he just likes to wear prescription sunglasses.
Mangekyo Sharingan causes you to lose your eyesight.
I have never heard of that happening. As far as I know, eyesight has nothing to do with you having or not having your wisdom teeth.