ArticleConcussion (London, England)2020
Evaluation of two portable pupillometers to assess clinical utility.
Article in Concussion (London, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
8 citing papers in PubMed, 14 citations in OpenAlex.
- The use of cellphone based automated pupillometry to quantify opioid withdrawal in patients receiving treatment for opioid use disorder.Journal of substance use and addiction treatment · 2026Article
- SmartPLR: a digital solution for AI-powered smartphone pupillometry.BMC ophthalmology · 2025Article
- Video-based pupillometry using Fourier Mellin image correlation.Scientific reports · 2025Article
- Assessing the Inter-Rater and Inter-Trial Reliability of the NeurOptics Pupillary Light Response-3000 Pupillometer.International journal of sports physical therapy · 2025Article
- Measuring the Pupillary Light Reflex Using Portable Instruments in Applied Settings.Vision (Basel, Switzerland) · 2024Article
- Development of a Smartphone-Based System for Intrinsically Photosensitive Retinal Ganglion Cells Targeted Chromatic Pupillometry.Bioengineering (Basel, Switzerland) · 2024Article
- Pilot Study of Smartphone Infrared Pupillography and Pupillometry.Clinical ophthalmology (Auckland, N.Z.) · 2022Article
- Interdevice Agreement between a Smartphone and a Commercial Pupillometer.International journal of applied & basic medical researchArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPupillometers have been proposed as clinical assessment tools. We compared two pupillometers to assess measurement agreement. MATERIALS &
methodsWe 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.
resultsFailure 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.
conclusionThe iPhone pupillometer had poor repeatability and suggests that it is not a practical tool to support clinical decisions.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.