A novel gene therapy that leads to cellular rejuvenation could restore vision after non-arteritic anterior ischemic optic neuropathy (NAION) and glaucoma. The technique is based on a reprogramming process that reverses the epigenetic DNA alterations caused by aging. Preclinical studies in glaucoma mice and nonhuman primates (NHP) models for this stroke-like disorder that affects the eye, showed an improvement of vision and restoration of the damaged axons of the optic nerve.