Objectively Measuring Observer Attention in Severe Thyroid-Associated Orbitopathy: A 3D Study

The Laryngoscope
David LiaoLisa E Ishii

Abstract

Measure the attentional distraction of facial deformity related to severe thyroid-associated orbitopathy using three-dimensional (3D) images and eye-tracking technology. Observers recruited at an academic tertiary referral center viewed 3D facial images of patients with severe thyroid-associated orbitopathy (TAO) and controls without TAO. An infrared eye-tracking monitor recorded their eye movements and fixations in real time. Multivariate Hotelling's analysis, followed by planned posthypothesis testing, was used to compare fixation durations for predefined regions of interest, including the eyes, nose, mouth, central triangle, and remaining face without the central triangle between severe TAO patients and controls. One hundred sixteen observers (mean age 26.4 years, 51% female) successfully completed the eye-tracking experiment. The majority of their attention was directed toward the central triangle (eyes, nose, mouth). On multivariate analysis, there were significant differences in the distribution of attention between control and severe TAO faces (T2  = 49.37; F(5,922) = 9.8314, P < 0.0001). On planned posthypothesis testing, observers attended significantly more to the eyes (0.77 seconds, P < 0.0001, 95% confidence interva...Continue Reading

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Citations

Jul 18, 2019·Current Opinion in Ophthalmology·Jonathan C P Roos, Rachna Murthy
Feb 14, 2020·Facial Plastic Surgery & Aesthetic Medicine·David LiaoMasaru Ishii

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