This hypothesis is further supported by our immunohistochemical data showing that the c‐kit‐positive TC subpopulation seems to almost completely disappear in human corneas affected by keratoconus, a degenerative corneal ectasia which results in progressive thinning of the cornea and, in more advanced stages, stromal scarring potentially leading to a severe visual impairment and to the necessity of corneal transplantation 6, 7, 9. Here, KIT is linked to keratoconus.