A dynamic visual acuity (OVA) measurement apparatus was designed, constructed, and tested for reliability. The apparatus was designed so that it was compact in size, light in weight, of reasonable cost, and adaptable to common projection systems. Directions, drawings, and diagrams were included so that a practicing optometrist with considerable understanding of optics and limited knowledge of simplified electronics could easily assemble the apparatus. The realiability testing results showed that this OVA measurement apparatus can be useful for both testing and training OVA . It was easy to use and provided a complete OVA profile wit hin a few minutes .
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