The doctor's entire explanation for Jane's blindness is just medical sounding nonsense.
There's nothing to suggest short term memory loss or disorientation, especially not on the film she is looking at since she apparently thinks a single image picked at random from the hundreds a CT scan takes to build a 3D image will tell her anything.
That isn't what "fleeting blindness" means, even if it was blindness caused by head trauma is a cause for concern, not a normal result of a "moderate" concussion.
Concussion does not cause numerous blood clots to spontaneously form and if it did they would show on a CT scan (used properly). It would also be cause for serious concern because "floating blood clots" will kill you.
Although, a blood clot demonstration does sound intriguing, it is, sadly, also nonsense.
And CVI, Cerebral or Cortical Visual Impairment is caused by serious brain injury, not any kind of damage or problem in the eyes and there is no guarantee that it is temporary. The damage that caused it would also have been visible on a CT scan, if it had been used properly and not like an x-ray machine.
