In this enlightening discussion, neurology expert Harry Sutherland and pupil function specialist Jeremy Moeller dive into the intricacies of pupillary anatomy and disorders. They explore the pupillary light reflex, detailing the roles of retinal cells and various brain nuclei. The duo also examines cranial nerve complexities, highlighting symptoms of oculomotor palsy alongside Horner's syndrome. With insights on diagnostic approaches and clinical implications, they provide invaluable knowledge for medical professionals navigating pupil assessments.