Apparatus for Kinetic Visual Acuity and Dynamic Visual Acuity

研制了动态视敏度(KVA)、动态视敏度(DVA)和短曝光时间视敏度测量装置。该仪器具有以下特点：(1)目标速度在静态到100 km/h的较大范围内变化，具有前后、水平两个方向。(2)靶标呈现位置向前70m-4m，水平+-2.0度。(3)曝光时间从1/1000秒到1s分7个阶段可变。(4)有四种靶标大小可供选择，目标颜色可从白、红、绿、蓝、黄四种颜色中选择，背景照度在0.1-200cd/m2之间。此外，我们对该装置的性能进行了检验和确认。此外，我们还测量了受试者的动态视力。结果表明：当目标速度达到100 km/h时，动态视力随目标速度的增加而缓慢下降，KVA还依赖于目标的背景照度。因此，研制的仪器被认为是有用的解决眼睛疲劳和交通眼科。

We developed the apparatus for measuring kinetic visual acuity (KVA) , dynamic visual acuity (DVA) and visual acuity with short exposure time.The features are as follows :(1) The target velocity is variable in wide range from static up to 100km/h, in two direction forward and backward, horizontal. We can set in 7 stage of velocity in above range.(2) The target presented position are 70m-4m in forward and +-2.0 degrees in horizontal.(3) The exposure time is variable in 7 stages from 1/1000sec to 1sec.(4) The four target sizes are available, target colors can be selected from white, red, green, blue and yellow, background illuminance is in 0.1 to 200cd/m2.Further, We checked this apparatus performance and confirmed the performances.In addition, We measured the kinetic visual acuity for subjects. The results are : the kinetic visual acuity decreased slowly with increasing target velocity up to 100Km/h. The KVA also depends on background illuminance of target. From these, the developed apparatus is considered to be useful in solving ocular fatigue and traffic ophthalmology.