Table 1. Summary of previous reports and present case.

Author and year	Lee 2008	Lee 2008	Ichikawa 2002	Ueno 2017	Present case
Age (year)	27	30	47	68	65
Sex	Female	Male	Male	Male	Male
Preceding vaccination	(-)	(-)	(-)	(-)	COVID-19 (Pfizer)
Preceding infection	Gastroenteritis	URI	URI	Gastroenteritis	(-)
Time between preceding event and onset	NA	NA	14 days	8 days	17 days
Affected eye side	Right	Right	Left	Right	Right
Ptosis	(-)	(+)	(+)	(+)	(+)
Gage limitation	Vertical	Adduction and vertical	Adduction and vertical	Adduction and vertical	Adduction and vertical
Ataxia	(-)	(-)	(-)	(-)	(-)
Deep tendon reflex	Normal	Decreased	Normal	Decreased	Normal
CSF	Normal	Albuminocytologic dissociation	Albuminocytologic dissociation	Normal	Albuminocytologic dissociation
NCS	Normal	Normal	Normal	Normal	Normal
Contrast-enhanced MRI	NA	NA	NA	NA	Enhancement in oculomotor nerve
Treatment	IVIG or Steroid	IVIG or Steroid	IVIG and Steroid	No	IVIG
Recovery period	Follow up loss	6 months	28 days	44 days	36 days (mild improvement)

URI, upper respiratory infection; CSF, cerebrospinal fluid; NCS, Nerve conduction study; MRI, magnetic resonance imaging; NA, Not available; IVIG, intravenous immunoglobulin.