Pupilometer

Pupillometer, also spelled pupilometer, is a medical device intended to measure by reflected light the size of the pupil of the eye.

An automated pupillometer also provides a reliable and effective way to quantitatively classify and trend the pupil light response.

With an automated pupillometer and an algorithm analyzing the pupil continuously for 5 seconds, the Quantitative Pupillometry Index (QPi) can measure pupillary reactivity and provides a numerical value.

Automated pupillometry removes subjectivity from the pupillary evaluation[5], providing a more accurate trend of pupil data, and allowing earlier detection of changes for more timely patient treatment.

Abnormalities in pupillary responses can be indicative of underlying neurological disorders, such as traumatic brain injury, stroke, cardiac arrest[9] or certain neurodegenerative diseases.

Another automated pupillometer named NeurOptics' Neurological Pupil index (NPi) can offer a consolidated parametric approach to mitigate subjectivity.

The NPi and automated pupillometry such as NeuroLight (QPi) have also recently been included in the updated 2020 American Heart Association (AHA) Guidelines for Cardiopulmonary Resuscitation (CPR) and Emergency Cardiovascular Care (ECC) as an objective measurement supporting brain injury prognosis in patients following cardiac arrest.

[11] Studies published in peer-reviewed journals continue to demonstrate the effectiveness of NeurOptics' NPi in helping clinicians improve patient outcomes.

[25] The pupillometer does not modify the clinical interest of the routine assessment; it removes the margin of error by giving measurements instead of evaluations.

Although a pupillometer can be used, the diagnosis is often made with a penlight & near-point card The extent of dilation of the pupil in the eye could be an indicator of interest and attention.

[29] Methods of reliable measurement of cognitive load, such as the dilation or constriction of the pupils, are used in marketing research to assess the attractiveness of TV commercials.

In addition, monitoring can provide valuable insights into the functioning of the automatic nervous system and aid in the diagnosis and management of neurological disorders.