Eye Tracking in Laryngology

A Study to Assess Eye Tracking and Visual Gaze Patterns in Laryngology

The purpose of this study is to assess whether eye-tracking technology can be used to differentiate the visual gaze patterns of experienced and novice laryngoscopists while reviewing prerecorded laryngeal videos with both normal and abnormal findings and to characterize any differences arising between level of training groups.

Study Overview

• Status: Completed
• Conditions: Healthy
• Intervention / Treatment: Other: Eye Tracking Technology Sensor

Detailed Description

Novice and experienced participants will be recruited to take part in this study. Novices include medical students without practical experience in otorhinolaryngology and resident physicians at different stages in training. Trainees, residents and experts from fields of gastroenterology and pulmonology will also be included. The experienced group will be defined as consultants and speech pathologists.

This study will look at multiple areas within otolaryngology including laryngology, rhinology, facial plastic surgery, head and neck oncology, and otology. Participants will view prerecorded videos and/or still pictures absent of patient identifiers.

There will be two tasks each taking approximately 10 minutes. Task order will be alternated between subjects with one task asking participants to view 7 still images from video laryngoscopy examinations. After each image participants will rate how likely the image is to represent glottic cancer and what portion of the image they deemed most important to their decision. For the second task, participants will be asked to view a 5 second video of a flexible laryngoscope exam, after which, they will be asked to identify the presence and side of vocal fold paralysis as well as note the location they deemed most important to their decision.

• Study Type: Interventional
• Enrollment (Actual): 30
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Minnesota
    • Rochester, Minnesota, United States, 55905
      • Mayo Clinic in Rochester

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Adults, age 18 and over.
• Already professionals in a laryngology related field, residents in a related field or students considering a related field.
• Related fields include otolaryngology, laryngology, and speech language pathology.

Exclusion Criteria:

- Anyone not meeting the inclusion criteria or anyone not wishing to participate.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Health Services Research
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Novice and experienced medical personnel; Participants will be asked to complete two tasks each taking approximately 10 minutes while wearing eye-tracking technology to understand focus of gaze during laryngeal endoscopy and stroboscopy interpretation.	Other: Eye Tracking Technology Sensor; Eye tracking will be performed using Tobii Pro eye tracking technology sensor (Tobii Pro Fusion, Stockholm, Sweden), providing binocular eye tracking up to 250 Hz. The sensor, positioned on the inferior aspect of the computer monitor, reflects infrared (IR) light beams off of each cornea and are subsequently captured.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time to Fixation Fixation Point	Defined as the temporary suspension of eye movement (80ms) on a specific point (≤ 30 pixels) within the field of view.	15 minutes
Percent of Fixation Time on pre determined area of interest	Defined as the percent of total gaze time on area of interest	15 minutes
Count of Fixations	Number of times observer returns gaze to area of interest	15 minutes

Collaborators and Investigators

• Sponsor: Mayo Clinic
• Investigators: Principal Investigator: Diana Orbelo, PhD, Mayo Clinic

Publications and helpful links

Helpful Links

• Mayo Clinic Clinical Trials

Study record dates

Study Major Dates

• Study Start (Actual): June 29, 2021
• Primary Completion (Actual): February 1, 2022
• Study Completion (Actual): February 1, 2022

Study Registration Dates

• First Submitted: August 30, 2021
• First Submitted That Met QC Criteria: August 30, 2021
• First Posted (Actual): September 5, 2021

Study Record Updates

• Last Update Posted (Actual): October 19, 2022
• Last Update Submitted That Met QC Criteria: October 18, 2022
• Last Verified: October 1, 2022

More Information

Terms related to this study

• Other Study ID Numbers: 20-012365

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No