摘要
为解决非接触式眼压计的量值溯源问题,深入分析了眼压检测中所涉及的Imber-Fick以及Glodmann眼压计的原理,设计了一套非接触式眼压计检定用模拟人眼装置,采用角膜与巩膜复合结构,控制模拟人眼在溯源和检测时相同的角膜变形量与内压预设值,并利用L型转矩平衡法,将模拟人眼的外部标准眼压值溯源至质量与长度。实验结果表明,装置具有良好的测量重复性和稳定性,分辨率高达1 Pa,且压力连续可调,整体扩展不确定度达到0.08 k Pa(k=2)。
To solve the value traceability of non-contact tonometer, through deeply analyzing of the Imber-Fick and Glodmann tonometer principle that involved in the intraocular pressure testing, a model eye device for non-contact tonometer is independently designed and developed, where the composite structure of the cornea and sclera, and the system correction method are adopted, the same corneal deformation and the inner pre-set pressure are controlled both during the testing and tracing, the external standard value of intraocular pressure are traced back to the quality and length, using a L-shaped torque balance. The experimental results show that the device has good repeatability and stability, where the resolution is up to 1 Pa, and pressure is continuously adjustable. The expanded uncertainty reaches at O. 08 kPa （ k = 2）.
作者
张进明
张忠立
王灿
ZHANG Jin-ming, ZHANG Zhong-li, WANG Can(Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, Chin)
出处
《计量学报》
CSCD
北大核心
2018年第3期442-448,共7页
Acta Metrologica Sinica
基金
国家质量监督检验检疫总局科技计划项目(2015QK033)
关键词
计量学
眼压检测
非接触式眼压计
检定装置
模拟人眼
metrology
intraocular pressure testing
non-contact tonometer
verification device
model eye
