Respected User, hi I evaluated your query thoroughly. *There are Stem cells from various sources - which activate/differentiate local stem cells & other biological pathways by chemokine activities to form new or repair optic nerve cells through regeneration. *Outcome in terms of improvement are significant for vision quality,acuity & ease of pain, may vary from patient to patient and can`t be guaranteed. Hope this clears your doubts. Thanks for using Health Care Magic & using our Medical services. Wishing her fast and speedy recovery from the same. Regards. Bye dear take care.