The Effect of Eye Fixation Control Method on Visual Field Testing

다국어 초록 (Multilingual Abstract)

Objective: The aim of the study is to examine an optimal eye fixation control method that can be employed to a PC-based visual field testing system. Background: The existing perimeters have disadvantages in terms of size and excessive functionality. Method: Twenty people in their 20s to 70s without glaucoma participated in the study. The combinations of two types of central target form (dot and number) and two conditions of sound presence (on and off) were evaluated in terms of visual field testing performance and subjective satisfaction. The effects of gender, age, eye, central target form, and sound presence were analyzed in terms of fixation error rate, the number of detected targets, the number of missing targets, and subjective satisfaction (7-point Likert scale). Results: The average number of detected targets was 53 out of 55. The lowest fixation error rate (5.0%) was found when central target form = dot and sound = off, while the highest subjective satisfaction (5.7) when central target form = dot and sound = on. A majority of missing targets (72% in the right eye; 79% in the left eye) occurred near the blind spots. Conclusion: Preferred features of eye fixation control method were identified from the experiment, but still a better alternative needs to be explored for effective visual field testing for diagnosis of glaucoma. Application: The findings of the present study can solve as a reference to explore a better eye fixation control method for a PC-based visual field testing system which could be eco-friendly in terms of energy and size than those of existing perimeters.

목차 (Table of Contents)

• ABSTRACT
• 1. Introduction
• 2. Method
• 3. Results
• 4. Discussion
• Acknowledgements
• References
• Author listings