| 自然光液晶及普通液晶电视对视疲劳影响 |
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| 引用本文： | 马军,吴双胜,李百惠,李珊珊,张伋,装正存,张兵.自然光液晶及普通液晶电视对视疲劳影响[J].中国公共卫生,2010,26(5). |
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| 作者姓名： | 马军 吴双胜 李百惠 李珊珊 张伋 装正存 张兵 |
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| 作者单位： | 北京大学公共卫生学院/儿童青少年卫生研究所,北京,100191 |
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| 摘 要： | 目的比较观看自然光液晶电视与普通液晶电视前后视觉疲劳发生程度。方法研究对象为59名20岁左右视力正常的大学生,每名受试者分别观看2.5 h的自然光液晶电视和普通液晶电视,在2次观看电视前后均进行明视持久度、闪烁光临界频率、注意力集中时间、视觉反应时、明度差别阈限等与视疲劳相关指标测试以及主观症状问卷调查。结果自然光液晶电视组与普通液晶电视组观看前后,奇偶数反应时和明度差别阈限差值分别为-0.096,-0.046 s和0.280,2.840 lx,而闪烁光临界频率和明视持久度前后差值大于普通液晶电视组,但差异均无统计学意义(P0.05);观看自然光液晶电视后只有眼胀、眨眼频率增加(P0.05);而观看普通液晶电视后发生眼痛、眼胀、视物模糊、视力下降、眩晕等的频率增加(P0.05)。结论与普通液晶电视比较,观看自然光液晶电视有缓解视觉疲劳的趋势,但有待进一步研究。
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| 关 键 词： | 自然光液晶电视 视疲劳 主观症状 偏振光 |
Incidence of visual fatigue among students wactching natural-light TV and common LCD TV |
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| Ma Jun,WU Shuang-sheng,Li Bai-hui,et al..Incidence of visual fatigue among students wactching natural-light TV and common LCD TV[J].Chinese Journal of Public Health,2010,26(5). |
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| Authors: | Ma Jun WU Shuang-sheng Li Bai-hui |
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| Institution: | Ma Jun,WU Shuang-sheng,Li Bai-hui,et al.Institute of Child , Adolescent Health,Peking University(Beijing 100191,China) |
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| Abstract: | Objective To compare the incidence of visual fatigue between the students wactching natural-light TV and common liquid crystal display(LCD) TV.Methods Fifty-nine college students with normal vision were recruited.Every subject was asked to watch natrual-light TV and common LCD TV,respectively.Then the visuognosis persistence,flicker fusion crtical frequency,attention span,visual reaction time,brightness difference threshold,dose work test,and subjective symptoms were measured before and after watching TV.Re... |
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| Keywords: | natural-light TV visual fatigue subjective symptom polarized light |
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