the.com/nystagmus
your eyeballs doing an involuntary side-eye, on repeat, without your permission.
means a medical condition causing rapid, uncontrollable rhythmic eye movements, often side to side, that impair steady vision.
from from greek nystagmos, meaning nodding or drowsiness, originally describing the head-bobbing of someone falling asleep upright.
babies checkdoctors test it in newborn eye exams
spinning triggerballet dancers use spotting to prevent it
inner ear linkoften caused by vestibular system disorders
caloric testcold water in the ear can induce it