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I have decided to do a few posts about our bodies, starting our
eyes, why well I have a book belonging to Sam about our eyes. I think there will
be a number of posts concerning our eyes, staring with this introduction.
Our eyes are the most tool we have for collecting information
about the world around us. Without our sense of sight things can become much more
difficult.
The bony hollow in which the eye sits is the socket or orbit,
above they eye are our eyebrows which help to prevent dust and dirt getting into
the eye. Our eyelashes do the same thing, and we produce tears to keep the eyes
moist and clean.
The white part of the eye is the sclera, and the coloured ring
is the iris, in the centre is the pupil which looks like a solid black dot.
However, the pupil is a hole and covered by a transparent layer
known at the cornea. Light enters through the pupil.
The eye is held in place by delicate muscles and ligaments,
which allow our eyes to move. The muscles of the two eyes usually work together,
so our eyes move together.
Inside the eye there are two large spaces, called chambers, the
front one is filled with a watery liquid called the aqueous humour.
Between the two chambers is a small disc of jelly called the lens,
this bends the light as it enters the eye. The larger chamber behind the lens
is filled with a soft jelly, called vitreous humour.
The curved inner surface of the eyeball is lined with a sensitive
layer called the retina, which is linked to the optic nerve which sends signals
to the brain.
Our eyes are definitely one of our most important senses, Jo-Anne, and you reminded me here that I'm due for a check up with my eye doctor. Eye health is imperative. Blessings!
ReplyDeleteYes I have my eyes checked each year
DeleteGood read about the eyes, and there is so much attached to eyesight it kind of unbelievable really. My dad went blind just after he retired and he died at 90, so blind for many years. He never complained.
ReplyDeleteI am pleased you liked the post, we often take our eyesight for granted
DeleteI don't know which layer in the back of my eyes is puckered, but it does interfere with your vision, that's for sure. It goes by many names, but macular puckers is what I remember easiest.
ReplyDeleteWe often don't think about the things that can go wrong with our eyes
DeleteEeewww creepy ... but very nice to have them!!!
ReplyDeleteI cannot look into someones eyes as to see if they have a lash in it
DeleteAnd yet, scientists would have us believe something so complicated could "evolve"...
ReplyDeleteThat is so true
DeleteThis is such a great introduction to the eyes, and I really enjoyed learning about all the different protective features we have, like the eyebrows and the lashes. It is amazing how every tiny part of the eye, like the sclera and the iris, has such a specific function, and I found the part about the pupil being a hole especially interesting. It sounds like Sam's book is a wonderful resource, and I am already looking forward to your next post in this body series. I hope you are having a perfectly relaxing and fun weekend so far.
ReplyDeleteI am so pleased you liked the post I found the bit about the pupil being a hole interesting as well, would never had thought that
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