Name the layers of the cornea and their function.
You can actually divide the cornea into 5 layers, these include:
1. Epithelium Layer: This is the surface layer of cells. They provide barrier function and a smooth surface for the tear film.
2. Bowmans Layer: A tough layer of basement membrane right under the epithelium. This layer is tough, and keeps the cornea from swelling forward … which means when the cornea swells, it must do so backwards into the anterior chamber.
3. Stroma: composed of highly arranged collagen fibers and supporting keratocytes, the cornea stroma provides the majority of the cornea. Injuries at this level can scar.
4. Descemet’s Layer: An inner layer of basement membrane. This layer is important for the health of endothelial cells. One of the leading needs for cornea transplant is from a dystrophy of Descemet’s layer called Fuch’s dystrophy.
5. Endothelium: The Endothelium is a crucial layer as it works as a barrier and a pump that keeps the cornea from getting too wet.
Most of these layers are easy to remember: especially the epithelium, stroma, and endothelium. To help you remember the location of the other layers: remember that Descemet’s is Deep, while Bowman’s is up in the BellTower.
YOU HAVE A VERY MUCH IMPORTENT INFORMATION, THIS INFORMATION IS RELEVANT PLEASE KEEP THE STANDARD UP.
Oh dear! It’s called the cornea, not retina!
Editors Note: Right you are! I’ve fixed that typo … Thanks for noticing!
just wanna ask my cornea is damage i have a blurry sight an optho clean it!! just wanna ask if cornea can heal itself!! il w8 ur ans in my email add ll10zai35ll@yahoo.com.ph thx
dear, i required models or pictures of amino acids transporters in the cornea or in corneal layers..for teaching purposes can you provide me?
to remember…. EBCDE like ABCDE from the alphabet…for easily remembered…
remember ABCDE
A= sufcace epithelium
B= bowmans membrane
C= connective tissue Stroma
D= descemet’s membrane
E= endothelium………..
question- can bowmans layer regenerate if damaged?
thanks
IF THIS LAYER -BOWMANS LAYER- IS DAMAGED AS BY A SCRATCH OR CUT IT DOES NOT REGENERATE TO ITS ORIGINAL FORM AND THUS SCARRING OCCURS.
thanks very much, you information has worked much for mylevel
how to measure iop in hazy and abraded cornea in cases of chemical burns
just like ABCDE…
A very nice doc for studying & teaching. Thanks v.m !!
iop measurement in hazy,abraded cornea by non-contact air-puff tonometer.
Thanks
Very nice way of teaching..
Metabolically active layet of cornea?
thank u….
thnx keep the standard up
It’s very informative…Thanks and God bless!
What are the regenerative layers of cornea..?
endotheleum regenerative layer of cornea
Thnkz it’s vry nyc hav solved my problem
Is descement membrane regenerative
such a great site to learn easy
There is another layer now known:
http://www.aaojournal.org/article/S0161-6420(13)00020-1/abstract
http://www.livescience.com/37348-new-layer-discovered-in-human-eye.html
One of the commenters on the second page claims the layer was known previously, but not named.
David, I’ve heard of the new layer but have been waiting to hear from my corneal docs whether it truly matters. The nice thing about anatomy (as a field of study) is that it tends to advance slowly.
As to whether we should “name” this as a “layer” is debatable. You could probably name lots of areas/intersections in the body … but it may just complicate understanding if it has no relevance.
For the purposes of this book/question, I’m going to leave it at five layers for now. Thanks for commenting and the links.
nice information.thank you Doctors
As a nurse in an eye hospital, this Web site has given me more knowledge on layers of cornea and their functions.
Thanks very much.
This web site has been very helpful. Thank you
Yeah .. But in some books stroma and endothelium is not written . I am confused
I was told I have small pits in the bottom layer around the cornea, but I can’t remember the name…is it Fuch’s Dystrophy? Thanks.
Thanks for the teaching ,great keep it up.
Thnx for this teaching . I now understand the layers well by the diagram
and what about duas layer
Thank you for these illustration
Thank you very much. It’s so helpful for us, medical students.
Is cornea is covered by conjunctiva ???
I recently have been dx with a very serious infection on my cornea. Lost sight for a week & more. Not totally regained but I am on the right path.
Thanks for the education….. helped me understand this condition much better! kepp up the good work.
Thanks a lot..
Very informative, thank you.
Content is fine