| The Objective Methods to Evaluate Ocular Fatigue Associated With Computer Work. |
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Young Woo Suh, Kyun Hyung Kim, Su Yeon Kang, Seoung Woo Kim, Jae Ryung Oh, Hyo Myung Kim, Jong Suk Song |
1The Association for Research in Visual Function, Korea University College of Medicine, Seoul, Korea. crisim@korea.ac.kr
2Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea.
3Department of Ophthalmology, Gachon University Gil Medical Center, Incheon, Korea. |
| 컴퓨터 작업으로 인한 눈 피로의 객관적 평가 방법 |
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서영우1,2ㆍ김균형1,3ㆍ강수연1,2ㆍ김성우1,2ㆍ오재령1,2ㆍ김효명1,2ㆍ송종석1,2 |
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The Association for Research in Visual Function, Korea University College of Medicine1, Seoul, Korea Department of Ophthalmology, Korea University College of Medicine2, Seoul, Korea Department of Ophthalmology, Gachon University Gil Medical Center3, Incheon, Korea |
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| Abstract |
PURPOSE
To develop methods for the objective measurement of ocular fatigue. METHODS: Fifteen patients were enrolled in the present study. Subjects performed visual tasks on a computer for one hour. A survey of ocular fatigue was conducted with a questionnaire. Tear break-up time, blinking rate, ocular protection index, conjunctival injection, maximal blinking interval, temperature of the ocular surface, and visual evoked potential were evaluated before and immediately after the task. Surface electromyography of the orbicularis oculi muscle was performed before and during the task. RESULTS: The survey showed increases in subjective ocular fatigue in all subjects. Tear break-up time, ocular protection index and maximal blinking interval decreased, while temperature of the ocular surface increased after the task. Conjunctival injection showed a tendency to increase. Electromyography, and visual evoked potential did not change significantly. CONCLUSIONS: In the present study, tear break-up time, ocular protection index, maximal blinking interval, and temperature of the ocular surface changed as ocular fatigue increased. Therefore, these measures can be objectively used for the evaluation of ocular fatigue. |
| Key Words:
Asthenopia;Dry eye;Ocular fatigue |
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