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Proceedings Paper

Pupillary sensor for ocular cranial nerve monitoring
Author(s): Rheagan Chambers; Nick Quon; Bridget Slomka; Nikolay Martirosyan; Michael Lemole Jr.; Marek Romanowski
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Paper Abstract

In humans, the pupillary light reflex (PLR) is the change in diameter of the pupil as a response to changes in light intensity. By quantitatively monitoring the pupillary light reflex, there is potential to gain diagnostic knowledge for patients in a variety of situations including those suffering from a traumatic brain injury as well as those undergoing invasive neurosurgery proximal to the optic nerves. To improve the diagnostic capabilities of the PLR, a novel pupillometer was developed. The pupillometer is intended for direct placement on the eye and allows for the continuous stimulation and monitoring of pupillary light reflexes. Tests on anesthetized rabbits demonstrate real-time data acquisition and display, including the pupil diameter and velocities of constriction and dilation. The sensor is in development for implementation as a clinical device to monitor the status of the oculomotor nerves, and may also find applications in the diagnostic assessment of traumatic brain injury or changes in intracranial pressure.

Paper Details

Date Published: 17 February 2020
PDF: 6 pages
Proc. SPIE 11225, Clinical and Translational Neurophotonics 2020, 112250I (17 February 2020); doi: 10.1117/12.2542058
Show Author Affiliations
Rheagan Chambers, The Univ. of Arizona (United States)
Nick Quon, The Univ. of Arizona (United States)
Bridget Slomka, The Univ. of Arizona (United States)
Nikolay Martirosyan, The Univ. of Arizona (United States)
Michael Lemole Jr., The Univ. of Arizona (United States)
Marek Romanowski, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 11225:
Clinical and Translational Neurophotonics 2020
Steen J. Madsen; Victor X. D. Yang; Nitish V. Thakor, Editor(s)

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