Sclera

The sclera (from the Greek skleros, meaning hard), also known as the white of the eye, is the opaque, fibrous, protective, outer layer of the eye containing collagen and elastic fiber. In humans the whole sclera is white, contrasting with the coloured iris, but in other mammals the visible part of the sclera matches the colour of the iris, so the white part does not normally show. In the development of the embryo, the sclera is derived from the neural crest. In children, it is thinner and shows some of the underlying pigment, appearing slightly blue. In the elderly, fatty deposits on the sclera can make it appear slightly yellow.

The human eye is relatively rare for having an iris that is small enough for its position to be plainly visible against the sclera. This makes it easier for one individual to infer where another individual is looking, and the cooperative eye hypothesis suggests this has evolved as a method of nonverbal communication.

Structure

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Take It Shake It

by: Sugar

"What is it that you want?" I get that a lot in my
travels.
I look up at the sky, and the answer is, "Only my
heart."
The really important words aren't so easy to say.
The place that the light points to, I run towards it.
If it's really something you want so much that it makes
you cry inside.
Just keep at it and for sure you'll take it someday.
The white clouds float by, heading towards the horizon.
Because the future that's set for us is always close to
I may have cleared the first step, but that's not the
end of it.
There'll be endless more starting today, maybe even
some meet with tears.
If you get tired after working your hardest, you can do
something besides work hard.
The seemingly empty, sleepy night, will come to life.
If you really want to get there, giving up sometimes is
fine.
Even the tears that are welling up, you'll shake it
someday.
Because there are things we'll never give up, we can be
steadfast. Thank you my dream.
Somewhere along the infinity of time, we'll find
happiness.
If it's really something you want, so much that it
makes you cry inside.
Just keep at it and for sure you'll take it someday.
The white clouds float by, heading towards the horizon.
Because the future that's set for us is always close to




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