CLDN5 (claudin 5) could not be directly linked to the causal genes through a literature search, and little could be found to connect CLDN5 to glaucoma, however, a case study by Cordovez et al. [68] found CLDN5 duplication to be a potential cause of Congenital Glaucoma. Here, CLDN5 is linked to congenital glaucoma.