【摘 要】
：
目的 研究正视儿童在视近条件下(50 cm)对显示器终端不同波长光线的调节反应.方法 横断面研究.招募正视儿童14例,注视50 cm处显示屏上动态呈现的不同颜色字体/背景组合的视
【机 构】
：
中山大学中山眼科中心眼科学国家重点实验室,中山市人民医院工作,TCL集团工业研究院
【基金项目】
：
中山大学临床医学研究5010计划资助项目;
论文部分内容阅读
目的 研究正视儿童在视近条件下(50 cm)对显示器终端不同波长光线的调节反应.方法 横断面研究.招募正视儿童14例,注视50 cm处显示屏上动态呈现的不同颜色字体/背景组合的视标,视标颜色组合根据字体颜色及背景颜色的不同,分为背景颜色对比组合(黑字/白底、白字/红底、白字/绿底、白字/蓝底)和字体颜色对比组合(黑字/白底、红字/白底、绿字/白底、蓝字/白底),应用shinnipon NK-5001R红外自动电脑验光仪测量7种不同颜色文字/背景组合的调节反应(AR)、调节滞后量(LA)及红、绿、蓝三种颜色校正的调节滞后量(CLA),各组之间的差异采用随机区组方差分析进行比较.结果 共有14名正视儿童符合纳入条件并完成检测,黑字/白底、白字/红底、白字/绿底、白字/蓝底、红字/白底、绿字/白底、蓝字/白底7种组合间调节反应均值(F=0.282,P=0.946)及调节滞后均值(F=0.281,P=0.945)差异无统计学意义,考虑拟合轴向色差的因素后,矫正调节滞后均值分别为(0.77±0.21)D、(0.98±0.26)D、(0.34±0.23)D、(-0.26±0.25)D、(0.96±0.27)D、(0.30±0.28)D、(-0.23±0.26)D,两两比较发现除黑字/白底、红字/白底两组间差异无统计学意义外,其余任意两组间差异均存在统计学意义(P＜0.01).结论 正视儿童正常阅读条件下对显示器终端长波长光产生较大的调节滞后量,视近调节滞后量随着波长的缩短表现出降低的趋势,蓝光时甚至表现为调节超前.
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