Corneal epithelial protection

Corneal epithelial protection is not a specific molecule, receptor, or canonical therapeutic target. Instead, it refers to the collective biological processes and cellular components that maintain the integrity and function of the corneal epithelium—the outermost layer of the cornea. The corneal epithelium acts as a physical barrier protecting the eye from pathogens and injury, while also playing a critical role in wound healing through cell migration, proliferation, differentiation, and extracellular matrix remodeling[2][5]. Key molecular players in these processes include growth factors (such as epidermal growth factor), cytokines (like interleukin 1), transcription factors (notably PAX6), matrix metalloproteinases (MMPs), and limbal stem cells that replenish epithelial cells after injury[1][2][3]. Disruption of these protective mechanisms can lead to increased susceptibility to infection or impaired vision due to scarring or loss of transparency. However, "corneal epithelial protection" itself is not a single druggable entity but rather an outcome supported by multiple molecular pathways and cell types involved in ocular surface health[1][2][3].