Oh my god. The Human just watched a video today about eye(i)'s origins! Learning about where my roots comes from and how the eye community came so far to reach this stage of evolution is so cool!

Oooh, and i saw my eye-ancestors! I sense this closeness to them and yet, there's something different about them from me. According to the video and the brains superior informations, these eyes ancestors has something called the "third eyelid". It is also known as the nictitating membrane, which either transparent or translucent. It can be drawn horizontally across the eyeball to protect and keep moisture within the eye while still retaining visibility. I found out through the video that many reptiles, like crocodiles, and birds in this world still has this feature! this is needed because birds fly through the air and moisture is quickly lost by the eye in the wind if this membrane is not there.

As I looked into the mirror, I suddenly saw this small vestigial remnant in the corner of me! ah, at least i know I'm related to my eye ancestors now! (and not some eye picked up in the dustbin...-.-) As i wonder why have this special feature is lost in me, i realized that it is because humans are not as exposed to the drastic winds and weather conditions as other animals do, thus the feature is slowly lost through the ages of selective evolution.

there! can you see the remains of the third eyelid at the corner of me?!

now, as at looked back through the generations (and the video), I realized how evolution had changed the lives of many in this ever-changing world. Three cheers to evolution!
(written by Ling Evan)