Evaluation of two portable pupillometers to assess clinical utility

Evaluation of two portable pupillometers to assess clinical utility

Pupillometers have been proposed as clinical assessment tools. We compared two pupillometers to assess measurement agreement. We enrolled 30 subjects and simultaneously measured the pupil diameter and light reflex amplitude with an iPhone pupillometer and a portable infrared pupillometer. We then en...

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Bibliographic Details
Published in:Concussion Vol. 5; no. 4; p. CNC82
Main Authors: McKay, Rachel Eshima, Kohn, Michael A, Schwartz, Elliot S, Larson, Merlin D
Format: Journal Article
Language:English
Published: England Future Medicine Ltd 01-12-2020
Subjects:
Agreements
Concussion
eye
Light
pupil
pupillary light reflex
pupillometry
Short Communication
Smartphones
United States > US
eye
pupillometry
pupillary light reflex
concussion
pupil
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Summary:Pupillometers have been proposed as clinical assessment tools. We compared two pupillometers to assess measurement agreement. We enrolled 30 subjects and simultaneously measured the pupil diameter and light reflex amplitude with an iPhone pupillometer and a portable infrared pupillometer. We then enrolled 40 additional subjects and made serial measurements with each device. Failure occurred in 30% of attempts made with the iPhone pupillometer compared with 4% of attempts made with the infrared pupillometer (Fisher’s exact p = 0.0001). Method comparison of the two devices used simultaneously showed significant disagreement in dynamic measurements. The iPhone pupillometer had poor repeatability and suggests that it is not a practical tool to support clinical decisions.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:2056-3299
2056-3299
DOI:10.2217/cnc-2020-0016