Senses Experiment: Are Two Eyes Better Than One?
How two eyes give you more depth perception, which is the ability to judge how near or far objects are.
- Hold a pencil lengthwise (on its side) in each hand.
- Now, with one eye closed, try to touch the erasers together. Did you miss?
- Now, try it with both eyes open. Voila! Two eyes give you better depth perception.
Reviewed by: Eric H. Chudler, PhD
Date reviewed: August 2011