cover test exotropia intermittent Hering illusion geometrical optical Ewald Hering Vivid Vision Circle Logo Transparent product product shot vivid vision home vivid vision home watercolor illusion chromaticity luminance color contrast ring runner space screenshot screen High Resolution base in base out vergence accommodation vr vision therapy high resolution Vision therapy tool vision care tool vision therapy device amblyopia strabismus vision treatment Vivid Vision Seevividly vision care device eye colorful vision Checker shadows Edward Adelson illusion shadows James Blaha infographic dichoptic Manish Gupta Virtual reality vision therapy Amblyopia treatment bundle system small logo james blaha seevividly vision therapy tool vision care dev girl shumaker rift tuan tran tuan covd diplopia Michigan State special Olympics default podcasts chart snellen acuity visual acuity fast company press buzz media Research poster ARVO 2019 knowledge base add a user launcher success story testimonial ebbinghaus illusion titchener circles nvidia instructions blaha ceo portrait breaker research box software Vivid Vision Optometry od dr tran optometrist stereo depth 3d optical illusion color colors color scheme vivid field vive vr vive headset htc vive vr htc vr htc vive dan fortenbacher dan fortenbacher fcovd wow vision michigan test manish gupta demo babo stereo sue fixing my gaze susan barry importance of eye exams Vision academy sf daydream vr daydream headset google vr google daydream paul harris nathan bonilla warford nathan bonillawarford birght eyes vision care bright eyes time Impossible object blivet widget devils fork VR vision therapy see vividly cris miranda games retina diagram visual system markdown reference github circle vision test fly stereo acuity randot arvind gupta advisor sosventures vrvt apollo vr 20 percent off discount badge Hardware VividVision spotlights clinic spotlights UVEA UVEA Mediklinik Vivid Vision Europe oculus hmd head mounted display Susan Barry Stereo Sue MC Escher Waterfall proximity gesture tracking visagraph results reading