# Will closing one eye periodically make the other eye wear out sooner? **URL:** \ **Category:** Factual Questions\ **Created:** [March 18, 2013, 2:07am UTC](https://boards.straightdope.com/t/will-closing-one-eye-periodically-make-the-other-eye-wear-out-sooner/653216 "2013-03-18T02:07:32Z")\ **Posts on this page:** 2\ **Page:** 2
**Author:** ![Leo\_Bloom](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/leo_bloom/32/10377_2.png) [@Leo\_Bloom](https://boards.straightdope.com/u/Leo_Bloom)\ **Post date:** [March 19, 2013, 4:51pm UTC](https://boards.straightdope.com/t/will-closing-one-eye-periodically-make-the-other-eye-wear-out-sooner/653216/21 "2013-03-19T16:51:53Z")
Shit. “Just made it under the wire” means “the brain was still responding.” Pretend this is the first sentence of the previous post. ---
**Author:** ![thelurkinghorror](https://avatars.discourse-cdn.com/v4/letter/t/7c8e57/32.png) [@thelurkinghorror](https://boards.straightdope.com/u/thelurkinghorror)\ **Post date:** [March 19, 2013, 6:09pm UTC](https://boards.straightdope.com/t/will-closing-one-eye-periodically-make-the-other-eye-wear-out-sooner/653216/22 "2013-03-19T18:09:54Z")
Aah! It gave him double posting syndrome! Did you get a cool David Bowie dilated eye from it? It’s less about ophthalmology and more about your brain. You brain normally designates cells for your left, right, and binocular channels. If it doesn’t get input from one, it assumes it doesn’t exist, and redesignates the input elsewhere. End result: no input in that critical period can mean a paucity of binocular cells, or worse, in one eye. This could lead to the eye not working, or more commonly, the dominant eye taking over. [Previous page](https://boards.straightdope.com/t/will-closing-one-eye-periodically-make-the-other-eye-wear-out-sooner/653216.md?page=1)