Eye Development In Vertebrates

Discussion in 'The Universe' started by wallflower, Mar 9, 2013.

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    wallflower Moderator

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    http://www.vetmed.vt.edu/education/curriculum/vm8054/eye/EMBYEYE.HTM

    Wow! I am gobsmacked on two counts today! :eek:

    First, I had always thought that the eyes originated from the mid-brain. This article says that they originate from the fore-brain.

    Secondly, I don't think I have personally come across any information that explains the early embryonic development of the eye in quite so much detail. (There are most likely sources out there, I just haven't personally come across them).

    To explain some of the terms:

    the 'fore-brain' is at the top of the brain,
    the 'mid-brain' is the "second-level",
    the 'hind-brain' is the bottom level (not shown in the diagrams).

    'Surface-ectoderm' refers to the position on the face where the eye appears.

    'Optic vesicle' are the 'buds' which later develop into the optic nerves which connect the eyes to the brain.

    I think a lot about the eyes and the fact that when we look into a person's eyes, we are looking into the deeper part of their brain. I wonder if that is where the saying comes from: "The eyes are the window of the soul."

    Wallflower
     
    Last edited by a moderator: Mar 9, 2013
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    wallflower Moderator

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