摘要
目的:将诱发电位技术应用于视力的客观评定。方法:以最小信号视角、P100波幅和潜伏期作为受检眼的检测指标,运用模式翻转视觉诱发电位(PRVEP)技术检测与记载各受检眼各不同信号视角条件下的结果(包括P100波幅和潜伏期的变化)。应用SPSS软件对收集数据作统计学处理和分析。结果:确定最小信号视角是客观评估视力的基础,选定P100波幅作为视力量化评价指标,建立了最小信号视角条件下P100波幅与视力间的回归方程,运用该方法对180眼视力的客观评估与国际标准视力表筛查结果比较无显著性差异。结论:应用在最小信号视角条件下P100波幅与视力的回归方程对受检者视力的评估切实可行、简便且能达到量化分析的目的。
AIM： To apply visual evoked potentials （VEP） technology in the expertise of visual acuity.
METHODS： All the objects we examined were volunteers, whose visual acuity ranged from the whole international standard vision table. Firstly the least signal visual angle, amplitude and latency of P100 were determined as examining items, then all results of every volunteer were examined and recorded under different experiment conditions with PRVEP technology （including the change of amplitude and latency of P100）. Lastly all data collected were processed and analyzed with SPSS software.
RESULTS： The determination of least signal visual angle was found to be the basis to expertize impersonal visual acuity, and the amplitude of P100 was determined as the quantitative expertise index. The regression formulation for the amplitude of P100 and vision under least signal visual angle was received. The impersonal expertise results with PRVEP technology were highly consistent to the examining results with international standard vision table.
CONCLUSION： With the above regression formulation for the amplitude of P100 and vision under least signal visual angle, we can objectively expertize visual acuity.
出处
《国际眼科杂志》
CAS
2006年第1期123-126,共4页
International Eye Science
基金
中国湖北省自然基金资助项目(No.2004A-BA200)
