Test your vision at home with the VisionCheck app and device! **Requires the EyeQue VisionCheck device to take vision tests.** *Don’t have one? Order from EyeQue or Amazon today!* Our second-generation CES-award winning vision test, VisionCheck, is powered by MIT-patented technology to help you learn about your refractive error i.e. your nearsightedness, farsightedness, and astigmatism. You can use the EyeQue VisionCheck app if you: - Have a single vision prescription between +8.00 and -10