Based on MIT technology and with proven accuracy, the EyeQue VisionCheck Automated At-Home Eye Test lets you test your vision from the comfort of your own home and order glasses with the results. The optical device attaches to your smartphone and the mobile application empowers a refractive error test to generate EyeGlass Numbers, the values needed to order glasses online. An automated pupillary distance (PD) measurement tool is also included. Unlike an office visit, VisionCheck is affordable, quick, and easy to use and one device can be shared by many people. Cloud-based proprietary algorithms generate EyeGlass Numbers based on multiple tests, meaning more precise results than traditional point-in-time measurements.