How do my eyes adjust to the dark and how long does it take?

By: Mark D. Fairchild, Rochester Institute of Technology, The Conversation

Outlets: The Conversation

Published: December 14, 2025

Words: 906

Last Updated: 4 weeks ago

By Mark D. Fairchild, Rochester Institute of Technology

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com.

How long does it take for your eyes to adjust to the dark and how does it happen? – Ellen T., 8, Cambridge, Massachusetts

No one can see in total darkness. Fortunately, there’s almost always some light available. …

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