The cornea is a transparent tissue with significant refractive and barrier functions. The
epithelium serves as the principal barrier to fluid and pathogens, a function performed
through production of tight junctions, and constant repopulation through differentiation and
maturation of dividing cells in its basal cell layer. It is supported posteriorly by basement
membrane and Bowman's layer and assists in maintenance of stromal dehydration. The
stroma composes the majority of corneal volume, provides support and clarity, and assists in …