Skip to content

NIH Websites Are Changing

NIH is moving the launch of its new website to the fall to ensure the best possible experience for everyone who relies on our websites for health information, research, funding opportunities, and other resources.
Get the Latest Updates and FAQs

The Visual System

Skip to NEI for kids content
The visual system

The Visual System: How Your Eyes Work

Skip video

 

Switch to video with audio description

Ever wonder how your eyes work? Watch this video to learn how you're able to see the world around you.

Last updated: December 10, 2025

Back to top