Find Your Blind Spot
Believe it or not, you can have trouble seeing something right in front of you. This is because the eye has a blind spot in which information-carrying nerves travel through. While this is usually corrected by having both eyes compensating for each others' blind spot, you can exploit the failings of an individual eye for an amazing optical illusion.
Steps
- Get a piece of white paper and place it on a flat surface.
- With your left hand, position your index finger and middle finger to be roughly the same distance away as the distance between your eyes. Please don't poke yourself in the eye while doing this.
- Keeping your index finder and middle finger the same distance away from each other, place your two fingers on the page.
- With a black marker, write an X where your index finger would be and an O where your middle finger would be. The X and O should each be less than a square centimeter in size.
- Move the paper away to about an arm's length away from you.
- Close your left eye.
- Look at the X only using your eye.
- Slowly bring your face towards the paper.
- When the circle disappears during the trick, then you have found your blind spot!
Tips
- Try moving the paper back and forth slowly if you can't find your blind spot.
- This trick works with your right eye too.
- The trick should work when you are about {{safesubst:#invoke:convert|convert}} from your eye to the paper.
Warnings
- Don't do it too many times. If you do, it can stress your eye.
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- Do the Rubber Pencil Trick
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