![]() ![]() The empathy levels of participants towards non-verbal movement-impaired people were assessed twice through a questionnaire, before and after each task. ![]() The eye-tracking data recorded from both tasks is stored in two datasets, which, besides gaze position, also include pupil diameter measurements. writing sentences using eye-gaze movements on a card board. One group performed a task of free exploration of structureless images, and a second group performed a task consisting of gaze typing, i.e. During each round of gaze recording, participants were divided into two groups, each one completing one task. We present a dataset of eye-movement recordings collected from 60 participants, along with their empathy levels, towards people with movement impairments. Results revealed a central point of fixation may remove variability in examining PD reliably using infrared eye tracking when consistent environmental and experimental procedures are conducted. Results from normative data showed an adequate comparison for people with normal vision development. Using infrared eye tracking and the RightEye IPD/PD test stimuli, reliable and accurate measures of IPD and PD were found. High positive significant correlations were found between the RightEye IPD test and the PL850 Pupilometer (P < 0.001) and Essilor Digital CRP (P < 0.001) and for the RightEye PD test and the RPVS (P < 0.001). Reliability results were strong (CA > 0.7) for all measures. Convergent validity was investigated by calculating the bivariate correlation coefficient. Reliability was analyzed with intraclass correlation coefficients (ICC) between trials with Cronbach's alpha (CA) and the standard error of measurement for each ICC. For PD, the test was measured against the Rosenbaum Pocket Vision Screener (RPVS). Validity for IPD measured the test (RightEye IPD/PD) against the PL850 Pupilometer and the Essilor Digital CRP. Of these, 50 were examined for reliability and validity. ![]() Participants (416) across various demographics were examined for normative data. Validity of the test compared to known clinical tools was determined, and normative data was established against which individuals can measure themselves. The purpose of this study was to determine the reliability of interpupillary distance (IPD) and pupil diameter (PD) measures using an infrared eye tracker and central point stimuli. The scale pupillometer showed greater interobserver variation than the objective tests. No clinically relevant median deviations were observed in the underlying repeated measurement scenario. ![]() Although no clinically relevant median differences were observed (when based on intraobserver means), deviations for single pupil diameter assessments ranged up to 1 mm. Pairwise comparison revealed statistically significant ( P<0.05), although not clinically relevant median deviations. Median pupil diameters were 6.67 mm for the scale pupillometer (interquartile range 6.07-6.94 mm), 6.60 mm for the dynamic pupillometer (6.0-7.02 mm), and 6.37 mm for the wavefront-based aberrometer (5.9-6.7 mm). Description was based on the intraindividual differences' medians and quantiles. The measurement devices were compared intraindividually by pairwise sign tests. The pupil diameter of 56 eyes of 28 probands (18 female, mean age 23 years) was measured under scotopic conditions by three independent examiners with each measurement device. An additional approach is a wavefront aberrometer based on the Hartmann-Shack principle (WASCA Asclepion-Meditec-Zeiss, Jena, Germany). A new computerized technique allows dynamic and binocular measurement of the pupil diameter by use of infrared light (P2000SA, Procyon Instruments, London, UK). Standardized estimation can be performed using a lens system with a built-in millimeter scale (Colvard, Oasis Medical, California). The pupil diameter plays an important role in the occurrence of photopic phenomena after refractive surgery. ![]()
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