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Human eye blinking in slow motion-- be prepared!! It's WEIRD (Original Post) ailsagirl Jan 2018 OP
That is fascinating, in a weird way. n/t dixiegrrrrl Jan 2018 #1
Weird is right ailsagirl Jan 2018 #3
Isn't that interesting. Ha ha. Anny61 Jan 2018 #2
Damn. I blinked and missed it. Baitball Blogger Jan 2018 #4
That is seriously cool! dhol82 Jan 2018 #5
That is quite a skill. I tried, but just can't do it in slow motion. Doodley Jan 2018 #6
Very interesting ! But it makes sense ... eppur_se_muova Jan 2018 #7
Now if they had filmed a real human instead of a reptilian alien... nt Binkie The Clown Jan 2018 #8

eppur_se_muova

(36,275 posts)
7. Very interesting ! But it makes sense ...
Sat Jan 20, 2018, 03:10 PM
Jan 2018

The eyelid basically wipes any dust, discharge, old tears, and other debris toward the "drain". There is a continuous flow of tears from the tear glands above the outer (temporal) side of the eye towards the duct at the inside corner.

https://www.mayoclinic.org/-/media/kcms/gbs/patient-consumer/images/2013/11/15/17/42/ds00463_-ds01096_im02751_r7_tearglandthu_jpg.ashx

This raises an obvious question: Do reptiles, and other animals with a nictitating membrane, blink in a different fashion ? I suspect they do, and that what we see in the video is the mammalian alternative to that "third eyelid". (According to Wikipedia, some mammals, mostly aquatic to some degree, do have a nictititating membrane as well.)

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