Unilateral blinking during focal seizures suggests an ipsilateral focus.
Unilateral blinking is not uncommon in focal seizures in children with TSC.
In TSC, ictal unilateral blinking may be ipsilateral or contralateral to the focus.
In TSC, unilateral blinking early in seizures is more often contralateral.
Seizure propagation and different mechanisms may cause the variable lateralization.