CAJ | 학술논문

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.
목적 연구정시인동재시근조건하(50 cm)대현시기종단불동파장광선적조절반응.방법 횡단면연구.초모정시인동14례,주시50 cm처현시병상동태정현적불동안색자체/배경조합적시표,시표안색조합근거자체안색급배경안색적불동,분위배경안색대비조합(흑자/백저、백자/홍저、백자/록저、백자/람저)화자체안색대비조합(흑자/백저、홍자/백저、록자/백저、람자/백저),응용shinnipon NK-5001R홍외자동전뇌험광의측량7충불동안색문자/배경조합적조절반응(AR)、조절체후량(LA)급홍、록、람삼충안색교정적조절체후량(CLA),각조지간적차이채용수궤구조방차분석진행비교.결과 공유14명정시인동부합납입조건병완성검측,흑자/백저、백자/홍저、백자/록저、백자/람저、홍자/백저、록자/백저、람자/백저7충조합간조절반응균치(F=0.282,P=0.946)급조절체후균치(F=0.281,P=0.945)차이무통계학의의,고필의합축향색차적인소후,교정조절체후균치분별위(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,량량비교발현제흑자/백저、홍자/백저량조간차이무통계학의의외,기여임의량조간차이균존재통계학의의(P＜0.01).결론 정시인동정상열독조건하대현시기종단장파장광산생교대적조절체후량,시근조절체후량수착파장적축단표현출강저적추세,람광시심지표현위조절초전.
Objective To investigate the effects of different colors on accommodation in emmetropic children when viewing a visual display terminal (VDT).Methods Fourteen emmetropic children with normal color vision were enrolled in this cross-sectional study.They were required to read 7 automatically activated text displays on a VDT at 50 cm.The 7 texts were presented in 2series of patterns.The first series of patterns was set according to the background color, including black/white,white/red,white/green,white/blue.The second series of patterns was set according to the character color, including black/white, red/white, green/white, blue/white. Accommodative response was measured with an objective infrared autorefractor.The difference in accommodative response,accommodative lag and corrected accommodative lag among groups were then compared, using the randomized blocks analysis of variance.Results All the fourteen emmetropic children successfully completed the task.There were no statistically significant differences in the mean accommodative response (F=0.282,P=0.946) and accommodative lag (F=0.281,P=0.945) among the 7 texts.After correcting for longitudinal chromatic aberration, the mean accommodative lags were (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,and (-0.23±0.26)D,respectively. Multiple comparisons with the Bonferroni test showed that there were statistically significant differences between each pair of groups (P＜0.01) except that between black/white and red/white.Conclusion Greater accommodative lag is detected in emmetropic children when reading texts in long wavelength light.The lag tend to reduce the response to short wavelength light and even accommodative lead is found to some extent for blue light.