July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
Assessing concussion with multifocal pupillographic objective perimetry
Author Affiliations & Notes
  • Ted Maddess
    Neuroscience, Australian National University, Canberra, Australian Capital Territory, Australia
  • Rachel Jaros
    Neuroscience, Australian National University, Canberra, Australian Capital Territory, Australia
  • Faran Sabeti
    Optometry, University of Canberra, Canberra, Australian Capital Territory, Australia
    Neuroscience, Australian National University, Canberra, Australian Capital Territory, Australia
  • Emilie Rohan
    Neuroscience, Australian National University, Canberra, Australian Capital Territory, Australia
  • Corinne F Carle
    Neuroscience, Australian National University, Canberra, Australian Capital Territory, Australia
  • Footnotes
    Commercial Relationships   Ted Maddess, EyeCo (I), nuCoria (F), nuCoria (I), nuCoria (P); Rachel Jaros, nuCoria (E); Faran Sabeti, None; Emilie Rohan, None; Corinne Carle, nuCoria (F), nuCoria (I), nuCoria (P)
  • Footnotes
    Support  nuCoria Pty Ltd
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 4136. doi:
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    • Get Citation

      Ted Maddess, Rachel Jaros, Faran Sabeti, Emilie Rohan, Corinne F Carle; Assessing concussion with multifocal pupillographic objective perimetry. Invest. Ophthalmol. Vis. Sci. 2018;59(9):4136.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : Recent results indicate that multifocal pupillographic objective perimetry (mfPOP) drives the cortical input to the pupillary system. Here we compare diagnostic power of 3 mfPOP variants in athletes who have had concussive injuries.

Methods : The 3 dichoptic mfPOP variants included a version with 44 test regions/eye that had a test duration of 6 minutes, and two 80-second tests with 12 test regions/eye. The two 80-second tests had maximum luminances of 156 and 216 cd/m2. We tested male subjects: 18 control subjects aged 24.3 ± 4.09 y (mean ± SD), and 37 rugby athletes with prior concussion aged 21.6 ± 2.11 y. We categorised the concussion patients into tertiles according to: days since concussion, concussions in the last year, and life-time number of concussions. All the concussions caused removal from the playing field. We conducted ROC analysis on the using regional sensitivities, delays and linear discriminant scores combining sensitivities and delays.

Results : The best discrimination was obtained between controls and persons who had concussion between 4 and 34 days before testing for the dimmer 80-second test, using the combined scores resulting in an area under the ROC curve of 0.85 ± 0.07 (mean ± SE). Performance was about equal for the mean of the worst 4 to 6 regions/eye. Thus the best discrimination was for a small number of defective visual field regions.

Conclusions : Reasonable diagnostic power was obtained for recently concussed athletes. Studies with more subjects, and more recent concussion, are needed. Nevertheless the results were encouraging.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

 

The layout of the 12 test regions for each eye.

The layout of the 12 test regions for each eye.

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