Traumatic injury to the optic nerve leads to blindness. While there is hope for a partial recovery if the optic nerve is resuscitated in a timely manner, blindness is usually incurable due to the irreversible nature of optic nerve damage. The human optic nerve is a bundle of many retinal nerve fibers, which is the bridge between the brain and the eyeballs to transmit signals. When the optic nerve is damaged due to a traumatic injury, signals cannot be transmitted to the brain and vision cannot develop, resulting in blindness. Due to the non-renewable nature of neurons, the neurons that make up the optic nerve cannot be cured when they are damaged or die as a result of trauma. If treatment is given in time after the trauma to prevent too many damaged neurons from dying, some vision may be preserved, but once the damage occurs it cannot be completely cured.