How two eyes give you more depth perception, which is the ability to judge how near or far objects are. Two pencils 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. Your Eyes Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.