The EyeGlass Numbers (EGNs) that are generated by either the Personal Vision Tracker (PVT) or VisionCheck are not prescriptions. However, you can use the EGNs provided from your test results to order eyeglasses from online retailers that do not require a signed prescription certification.
The Personal Vision Tracker and VisionCheck are self-administered refraction tests. An eyecare professional does not administer the EyeQue test. You may make errors while testing, and the results may not be exactly the same as your last prescription from an eyecare professional. While tracking your vision over time, your EyeGlass Numbers can reveal changes and fluctuations in your refractive errors. Some of this may be due to normal daily fluctuations in your vision, some may be due to inconsistent testing or distractions on your part, and some may be due to age-related changes or various conditions or diseases. EyeQue devices only track refractive changes and cannot determine the cause of vision changes or make any diagnoses. Personal vision testing does not replace the need for regular eye health exams. We recommend that you seek a comprehensive vision and eye health examination with an optometrist or ophthalmologist every two years if you’re under the age of 60, and every year if you’re 60 or older in order to screen for and prevent eye diseases, many of which have no symptoms. EyeQue devices are intended to be an adjunct to these exams and could even help provide useful information to your eyecare professional.