Instead it causes right sided constant rigorous spinning .. would the occipital eventually deteriorate and the spinning ever stops or the person will eventually be blind, if at all?
I don't think impact head injuries result in easily predictable outcomes. My experience is that each injury is unique and affects the person differently.
Brain imaging scans can narrow the areas affected--and for spinning would need to assess vestibular and cerebellar impacts.
This might give you some ideas of functional assessments and treatments: https://www.researchgate.net/publication/272248956_Dizziness_Following_Whiplash_Injury_A_Neuro-Otological_Study_in_Manual_Therapy_Practice_and_Therapeutic_Implication
Here's more about occipital injury and outcome: http://www.sciencedirect.com/science/article/pii/S157234611300007X
Kind regards,
Rosi
Article Dizziness Following Whiplash Injury: A Neuro-Otological Stud...
The most common non-penetrating injury produced by any blow to the head is a contrecoup injury to that part of the brain OPPOSITE the blow. This is because the brain is accelerated into the skull by the blow. In this case, a patient who has struck the back of his head by falling over backward would likely have the most injury to the frontal lobes, and might have problems with executive functions like memory rather than vision. It sounds like vertigo has been a serious problem in the case you describe. This certainly implies a problem with the vestibule, the vestibular nerve, or the vestibular nucleus. Careful neurologic evaluation, including brain imaging if appropriate will help clarify the prognosis. I hope there is rapid recovery.