Profile: Vistech Consultants, Inc. deals with vision screening programs and both contrast sensitivity & glare vision test systems. Our VCTS® 6500 is used to measure postoperative logMAR (minimal angle of resolutions) visual acuities and logCS (contrast sensitivity). It measures CS for five spatial frequencies: 1.5, 3, 6, 12 and 18 cycles/degree (cpd). Our MCT 8000 is used to measure photopic contrast sensitivity.