Precision and convenience are a tradition in high quality TOPCON optical instruments. The VT-10 vision tester advances this tradition still further, making refraction quicker and easier than ever before, providing unequaled performance and exceptional versatility. Precision in design and workmanship guarantees accuracy in refraction measurements-accuracy that won't deteriorate even after long years of use. Total quality from TOPCON means you can have total confidence in the performance you'll enjoy from the VT-10 vision tester.