RE: When we close our eyes are we "seeing" dark or do our eyes shutdown?
December 7, 2017 at 3:11 am
(This post was last modified: December 7, 2017 at 3:12 am by ignoramus.)
Is it logical to assume full time marine animals don't need eyelids because their eyes never dry out? Is that the only evolutionary function of eyelids?
And maybe to keep dust out, etc
Another question... A seal has eyelids, therefore tearducts ... Does it ever have to blink whilst underwater?
And maybe to keep dust out, etc
Another question... A seal has eyelids, therefore tearducts ... Does it ever have to blink whilst underwater?
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