"The visual pathway is a component of the central nervous system (CNS) and therefore is not regenerative. Acute optic nerve injury, ischemic optic neuropathy and glaucoma are conditions that initially lead to partial blindness and eventually could lead to total blindness. Extensive neuron and retinal ganglion cells (RGC) death is evidenced in these pathologies. Semaphorin 3A (Sema3A) is a cell sec ...