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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
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Quantitative Pupillometry: Clinical Applications for the Internist.

Stephen A Figueroa1, DaiWai M Olson1, Abdulkadir Kamal2

  • 1Department of Neurology, University of Texas Southwestern Medical Center, Dallas; Department of Neurological Surgery, University of Texas Southwestern Medical Center, Dallas; Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas.

The American Journal of Medicine
|May 11, 2024
PubMed
Summary

Quantitative pupillometry offers a superior, evidence-based approach to assessing the pupillary light reflex compared to subjective methods. This advanced technique is increasingly adopted globally in healthcare settings for improved patient evaluation.

Keywords:
Cranial nervesHospitalizationPhysical assessmentPupillary light reflexPupils

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Area of Science:

  • Ophthalmology
  • Neurology
  • Medical Technology

Background:

  • The pupillary light reflex assessment has been a cornerstone of medical practice since Galen.
  • Subjective methods using flashlights lack precision and are prone to variability.
  • Quantitative pupillometry offers objective and reproducible measurements.

Purpose of the Study:

  • To review the rationale and evidence supporting the use of quantitative pupillometry.
  • To highlight the benefits of pupillometer-derived measures in clinical practice.
  • To underscore the expanding role of pupillometry across the healthcare continuum.

Main Methods:

  • Literature review of studies on pupillary light reflex assessment.
  • Analysis of evidence supporting quantitative pupillometry over subjective methods.
  • Synthesis of data on pupillometer application in diverse patient populations.

Main Results:

  • Growing evidence supports quantitative pupillometry as the standard of care.
  • Pupillometers are now standard in hospitals worldwide.
  • Pupillometer-derived measures are valuable in both neurological and non-neurological conditions.

Conclusions:

  • Quantitative pupillometry represents a significant advancement in evaluating the pupillary light reflex.
  • Its adoption is increasing globally due to its objective and reliable nature.
  • This technology enhances patient care across various medical specialties.