Pupillary sensor for ocular cranial nerve monitoring

Rheagan Chambers; Nick Quon; Bridget Slomka; Nikolay Martirosyan; Michael Lemole Jr.; Marek Romanowski

doi:10.1117/12.2542058

17 February 2020 Pupillary sensor for ocular cranial nerve monitoring

Rheagan Chambers, Nick Quon, Bridget Slomka, Nikolay Martirosyan, Michael Lemole Jr., Marek Romanowski

Proceedings Volume 11225, Clinical and Translational Neurophotonics 2020; 112250I (2020) https://doi.org/10.1117/12.2542058
Event: SPIE BiOS, 2020, San Francisco, California, United States

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.

Citation Download Citation

Rheagan Chambers, Nick Quon, Bridget Slomka, Nikolay Martirosyan, Michael Lemole Jr., and Marek Romanowski "Pupillary sensor for ocular cranial nerve monitoring", Proc. SPIE 11225, Clinical and Translational Neurophotonics 2020, 112250I (17 February 2020); https://doi.org/10.1117/12.2542058

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