None listed
Conditions
Brief summary
The study will test whether a device can detect OKN in children. The purpose of this study is that it is important in the development of a device that can detect vision problems in children.
Interventions
The child will look at a pattern displayed on a display screen from 1.5M. The Objective Acuity system will track the eye movements to determine whether they have Optokinetic Nystagmus (OKN), when looking at the screen. The study will be carried out by Dr. Christine Nearchou at The University of Melbourne, School of Optometry.
The clinical device (otherwise referred to as the OKN device) is a system designed by Objective Acuity Ltd, which consists of a computer, stimulus display unit, an IR vide
The child will look at a pattern displayed on a display screen from 1.5M. The Objective Acuity system will track the eye movements to determine whether they have Optokinetic Nystagmus (OKN), when looking at the screen. The study will be carried out by Dr. Christine Nearchou at The University of Melbourne, School of Optometry. The clinical device (otherwise referred to as the OKN device) is a system designed by Objective Acuity Ltd, which consists of a computer, stimulus display unit, an IR video camera, eye tracking system and background IR illumination. Stimulus display unit - dynamic stimulus pattern designed to induce OKN are presented on a 27” inch monitor. IR video camera – videos of participant’s eyes and face are recorded for OKN analysis. The camera lens is positioned at the plane of the monitor, and the lens was set to capture the region of the face. Camera resolution was set to 640 × 480 pixels, at 30 Hz refresh rate. Appropriate IR lighting is used to provide optimal illumination of the participant’s eyes to aid image analysis. The recording of the video is synchronized to the presentation of the stimulus on the monitor using Matlab in the master computer. The participant testing will be up to 5 minutes. There will be no follow up assessment. The collection of the data (eye signal and video footage) as input into the new system and old system analysis will be simultaneously collected.
Sponsors
Objective Acuity (Australia) Pty Ltd
Eligibility
Sex/Gender
All
Age
3 Years to 5 Years
Healthy volunteers
Yes
Inclusion criteria
Children will be eligible for inclusion if they meet the following criteria: • Aged 3-5 years old (36-71 months at the time of registration) • Have parent(s)/guardian(s) willing to provide informed consent • Have no known visual impairment (VA < 6/24 or LogMar 0.6))
Exclusion criteria
Potentially eligible children will be excluded if they have any of the criteria below: • Infantile nystagmus syndrome • Eye muscle surgery within the past 6 months • Current eye disease • Developmental delay (known or suspected) • Systemic disease or syndrome • Visual impairment <6/24 or LogMar 0.6
Outcome results
None listed