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Question: Name the layers of the cornea and their function.
Answer: You can actually devide 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.
Comments and Feedback
5 Comments
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YOU HAVE A VERY MUCH IMPORTENT INFORMATION, THIS INFORMATION IS RELEVANT PLEASE KEEP THE STANDARD UP.
Comment by Bongeka Koto — April 7, 2009 @ 2:31 pm
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Oh dear! It’s called the cornea, not retina!
Editors Note: Right you are! I’ve fixed that typo … Thanks for noticing!
Comment by Oops — May 7, 2009 @ 7:43 am
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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
Comment by marc — August 10, 2009 @ 8:06 pm
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dear, i required models or pictures of amino acids transporters in the cornea or in corneal layers..for teaching purposes can you provide me?
Comment by sachin — January 18, 2010 @ 2:33 am
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to remember…. EBCDE like ABCDE from the alphabet…for easily remembered…
Comment by Patchintero — January 30, 2010 @ 9:47 am
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