The cornea is located on the front of the eye, forming the outermost layer. It's the clear, dome-shaped surface that covers the pupil, iris, and anterior chamber. Think of it as the eye's window.
Here's a more detailed breakdown:
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Position: It sits at the very front of the eyeball.
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Function: The cornea's primary function is to refract, or bend, light. This bending is crucial for focusing images onto the retina, allowing us to see clearly. It also protects the inner eye from debris and germs.
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Structure: Though transparent, the cornea is a complex structure composed of multiple layers:
- Epithelium: The outermost layer, which acts as a barrier against infection and injury.
- Bowman's Layer: A tough layer of collagen that helps maintain the cornea's shape.
- Stroma: The thickest layer, made up of collagen and responsible for the cornea's strength and transparency.
- Descemet's Membrane: A thin, strong layer that supports the stroma.
- Endothelium: The innermost layer, which pumps fluid out of the stroma to keep the cornea clear.
Therefore, when asked "Where is the cornea?", remember it's the clear, protective, and focusing surface at the front of your eye.
