Open AccessEvaluation and Calibration of a Binocular Infrared Pupillometer for Measuring Relative Afferent Pupillary Defect
Author(s) -
Audrey Shwe-Tin,
Guy T Smith,
Daniel Checketts,
Ian Murdoch,
Daniel R. Taylor
Publication year - 2012
Publication title -
journal of neuro-ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.586
H-Index - 55
eISSN - 1536-5166
pISSN - 1070-8022
DOI - 10.1097/wno.0b013e31823f45e5
Subject(s) - pupillometry , receiver operating characteristic , confidence interval , pupil , area under the curve , calibration , mathematics , medicine , optics , statistics , physics
Binocular infrared pupillometry allows an estimate of the relative afferent pupillary defect (RAPD), designated the pupillometric RAPD (pRAPD). We calibrated the pRAPD of a commercially available pupillometer against neutral density filters (NDFs) of known attenuation. The performance of the pupillometer using its own proprietary algorithm is assessed and compared to that of alternative algorithms.