Table 2

Summary of in vitro models used in studies of diabetic corneal epithelial complications

ModelAuthorsTypeMajor applicationAdvantagesDrawbacks
Cultured human epithelial cellsYang et al16PrimaryDiabetic keratopathyAn established cell culture system for investigating epithelial wound healing in high glucose medium.Limited lifespan of cells.
The lack of blood supply and innervation lowers clinical translatability of results.
Mouse corneal epithelial cell lineYang et al16Cell lineDiabetic keratopathyAllows for genetic manipulation to study mechanisms of pathogenesis.Cells may have genetic and phenotypical differences as well as altered morphology when compared with normal corneal epithelial cells.
Trigeminal ganglia neuronal cellsDai et al11PrimaryDiabetic corneal neuropathyA tight control of the extracellular environment ensuring a precise neuronal environment for studies.The lack of corneal epithelial cells prevents investigation into the impact of trigeminal nerve health on wound healing.