The cornea is a transparent, avascular structure essential for refracting light. Histologically, it includes:
- Epithelium: A non-keratinized stratified squamous epithelium that regenerates rapidly. - Bowman's Layer: An acellular zone providing structural integrity. - Stroma: Comprising collagen fibers and keratocytes, it makes up 90% of the cornea's thickness. - Descemet's Membrane: A thick basement membrane produced by endothelial cells. - Endothelium: A single layer of cells responsible for maintaining corneal transparency by regulating fluid and solute transport.