# Eye Exam... 1 eye vs. 2 eyes

**URL:** <https://boards.straightdope.com/t/eye-exam-1-eye-vs-2-eyes/227445>\
**Category:** Factual Questions\
**Created:** [February 4, 2004, 4:43am UTC](https://boards.straightdope.com/t/eye-exam-1-eye-vs-2-eyes/227445 "2004-02-04T04:43:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Ice97531](https://avatars.discourse-cdn.com/v4/letter/i/bb73d2/32.png) [@Ice97531](https://boards.straightdope.com/u/Ice97531)\
**Post date:** [February 4, 2004, 4:43am UTC](https://boards.straightdope.com/t/eye-exam-1-eye-vs-2-eyes/227445/1 "2004-02-04T04:43:24Z")

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I recently had an eye exam and I had to read the eye chart.  
I noticed that with one eye closed I could not see very well with. Then I did the other eye closed and I could not see very well with. However with both eyes open I could see much better…Why?