similarities between glaucoma and Alzheimers or Parkinson’s

Researchers reveal similarities between glaucoma and Alzheimers or Parkinson’s disease
A new understanding of glaucoma has emerged. “Glaucoma isn’t simply an eye disease but rather a degenerative nerve disorder, not unlike Alzheimer’s or Parkinson’s disease.” Glaucoma begins with injury to the optic nerve as it exits the back of the eye the damage then spreading from nerve cell to nerve cell. When the retinal ganglion cells are “sick”, the long axons that project from the eye to the brain are also affected, resulting in changes that we can detect in the vision center of the brain. This phenomenon is called transynaptic damage, which occurs in Parkinson’s disease and Alzheimer’s.