Rand is an ophthalmologist, not a neurologist.
He opens his trap while ignorant.
OTOH, real doctors think these are seizures, and I agree, because when you are lightheaded from dehydration or sudden sugar level problems, you need to sit down immediately or you’ll fall down, because the legs give way. The turtle was just “locked in space.” Unable to move or do anything with his eyes looking at nothing. THAT is not lightheadedness and doing a brain test when it is not happening like his doctor did, will find nothing. Like if you have heart palpitations and you do an ECG when they aren’t happening.
Whom are they trying to kid?
It may be a result of his fall, and may go away, but call it what it is.