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30. Kongress der Deutschsprachigen Gesellschaft für Intraokularlinsen-Implantation, Interventionelle und Refraktive Chirurgie (DGII)

Deutschsprachige Gesellschaft für Intraokularlinsen-Implantation, Interventionelle und Refraktive Chirurgie (DGII)

11.02. - 13.02.2016, Mannheim

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Digital pupillometry with PupilX in a normal population

Meeting Abstract

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  • Annekatrin Rickmann - Sulzbach/Saar
  • M. Waizel - Sulzbach/Saar
  • S. Kazerounian - Sulzbach/Saar
  • P. Szurman - Sulzbach/Saar; Tübingen
  • H. Wilhelm - Tübingen
  • K.T. Boden - Sulzbach/Saar

Deutschsprachige Gesellschaft für Intraokularlinsen-Implantation, Interventionelle und Refraktive Chirurgie. 30. Kongress der Deutschsprachigen Gesellschaft für Intraokularlinsen-Implantation, Interventionelle und Refraktive Chirurgie (DGII). Mannheim, 11.-13.02.2016. Düsseldorf: German Medical Science GMS Publishing House; 2016. Doc16dgii046

doi: 10.3205/16dgii046, urn:nbn:de:0183-16dgii0461

Veröffentlicht: 1. März 2016

© 2016 Rickmann et al.
Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung). Lizenz-Angaben siehe http://creativecommons.org/licenses/by/4.0/.

Gliederung

Text

Purpose: The aim of this study was to evaluate the pupil size of normal subjects at different illumination levels to establish a nomogram for pupil size and anisocoria in a healthy population under well-defined measurement conditions with a novel pupillometer.

Methods: Pupil size of healthy study participants was measured with infrared-video PupilX pupillometer (MEye Tech GmbH) at 5 different illumination levels (0, 0.5, 4, 32 and 250 lux). Measurements were performed by the same person during a measurement period of 3 seconds with 90 images with an absolute linear camera resolution of approximately 20 pixel per mm.

Results: This cross-sectional study analysed 490 eyes of 245 patients (mean age 51.9 ± 18.3 years, range 6-87 years). On average, the mean pupil diameter decreased for both eyes with light intensity with 5.39 mm ± 0.10 for 0 lux, 5.20 mm ± 0.13 for 0.5 lux, 4.70 mm ± 0.16 for 4 lux, 3.74 mm ± 0.18 for 32 lux and 2.84 mm ± 0.13 for 250 lux illumination. Percentage of patients with anisocoria increases with age. The amount of anisocoria is higher under scotopic and mesopic conditions.

Conclusion: This study provides reference values concerning age- and light-related pupil size and anisocoria as a baseline for future patient studies.