what causes stroke in optic nerve
A stroke of the optic nerve is caused by ischemia or poor circulation to the blood vessels that supply the front or anterior portion of the optic nerve. Without nutrients and oxygen being supplied in adequate amounts, a portion of the nerve tissue will be lost.isual acuity is directly related to the location and amount of the optic nerve affected by the stroke. Some patients may have a profound loss in one eye while the other eye still has 20/25 vision. However, loss of side vision often complicates the loss of vision.