The invention concerns compositions and methods for treating and/or preventing ocular pathologies. The invention also concerns compositions and methods enabling the regulation of paracellular permeability of the ocular epithelium. The compositions and methods of the invention are based in particular on the use of agents or conditions modulating the opening of tight junctions of the ocular epithelium. The invention can be used for preventive or curative treatment of various pathologies, such as pathologies of the ocular surface in mammals, particularly in human beings.
