Eyeball dissection Eye anatomy

you have the sheep eyeball here so we're going to look like first a standard structure you can see the sheep eyeball so in the white part here I have the sclera it progresses all the way to the back but it's wrapped by muscles your extrinsic eye muscles but the y part known as sclera this part here that is semi-transparent it should be transparent about the formaldehyde changes its color that's the cornea the corner so sclera in white the cornea semi-transparent in the back of the eye we have a little love here that's the optic nerve all right we're gonna cut the design out to the internal structures so which is very very very very interesting so if we removed some of the fluid that is in there you start seeing Tanner structures now the level DTM the video may not be that good but you see that there would be like a fringed structure here these fringe structures with like finger like filaments here it's the ciliary body it's the outer circle the inner circle with the which the fringes are much thinner and finer these guys are the RS so two circles the outer one the ciliary body which is a group of muscles they hope the lens together and the air is here that can dilate and or constrict increasing the the hole here the name of this hole that you can see the white part here the name of the hole is the pupil so the pupil varies in size depending on the progression of the iris you've of course the hole here you can reverse it it's pointing to the cornea we just look in this side and you can see the cornea on this side coming through the hole all right so now we move to this part here and the first thing you'll notice is that there's a gel light structure here this gel here is the deepest humor this island in the middle of the gel that I just took off that's the lens the lens is held together by the cilia body so it should go in the front here now it's hard to see but if you see in the back there of the humor there's a skin like structure that is starting to get folded so it's like white skin color so I'm gonna dump the vitreous humor which is this gel here on the tray and I tell my student that looks like a little breast implant and it does look like and here you can see the retina that it's easily detached from the back of the eye now the retina is maintained stretch there but I did use humour as soon as I remove that you start seeing those wrinkles being formed because the retina is gone I removed that part and you have to be gentle so you don't remove the entire inner layer of the eye and then I want to go back to it here and now the retina is removed the dark part that you have in the back is called the choroid choroid and then the skin that is highly folded here is the retina they structure that is een in iridescent metallic with use of blue here is the tapi de Lusignan it's a structure that exclusive of nocturnal mammals and animals I can see in the dark and not present in humans so the retina is held together at one point of insertion there and pour more of the liquid and that point of insertion there it's the optic disk it's where the retina inserts in passes to through the choroid and gets on the outer edge where the optic nerve will be located so a quick review cornea sclera look inside choose circles ciliary body iris and the hole here which is the people then the dit regime has removed the retina skin color and the choroid in black in the back that's it