AI Summary
Pupillary assessment is important for diagnosing neurological impairment, as abnormal or absent pupil reactivity can indicate a neurological emergency. However, the subjectivity and lack of reliability of pupil assessments have limited the diagnostic and prognostic potential of longitudinal pupillometry.
Pupillary assessment is highly regarded by clinicians who are responsible for diagnosing neurological impairment. Abnormal or absent pupil reactivity can herald a neurological emergency due to either life-threatening compression or intrinsic injury to pupillary pathways in the brainstem.1 Conversely, normal pupil reactivity signifies brainstem integrity, which is an important marker of recovery. However, the diagnostic and prognostic potential of longitudinal pupillometry has been limited by the subjectivity and lack of reliability of pupil assessments.