What is a correct statement regarding epithelial cells?

Epithelial cells, especially those found in the cornea, play a crucial role in maintaining ocular health, and their ability to reproduce is key to this function. The corneal epithelium, which is the outermost layer of the cornea, is constantly exposed to environmental factors and can sustain wear and tear. Its regenerative capability allows for the repair of any damage due to trauma, injury, or disease. This regenerative ability ensures that the corneal surface remains intact and functional, facilitating light transmission and protecting the underlying structures of the eye.

In contrast, the other options do not reflect the true properties of epithelial cells in the cornea. The posterior layer of the cornea consists of the endothelium, not the epithelium. While epithelial cells can regenerate rapidly, some layers of the cornea, like endothelial cells, have limited regeneration potential. Additionally, the epithelium is not the thickest layer; that title goes to the stromal layer of the cornea.