Evaluation of two portable pupillometers to assess clinical utility
Background: Pupillometers have been proposed as clinical assessment tools. We compared two pupillometers to assess measurement agreement. Materials & methods: We enrolled 30 subjects and simultaneously measured the pupil diameter and light reflex amplitude with an iPhone pupillometer and a porta...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Aldus Press
2020-12-01
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| Series: | Concussion |
| Subjects: | |
| Online Access: | https://www.futuremedicine.com/doi/10.2217/cnc-2020-0016 |
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| Summary: | Background: Pupillometers have been proposed as clinical assessment tools. We compared two pupillometers to assess measurement agreement. Materials & methods: 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. Results: 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. Conclusion: The iPhone pupillometer had poor repeatability and suggests that it is not a practical tool to support clinical decisions. |
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| ISSN: | 2056-3299 |