The EyeGlass Numbers (EGN’s) that are generated by the Personal Vision Tracker (PVT) are not prescriptions. You can use the EGN's provided to order eyeglasses from online retailers that do not require an eye care provider's prescription certification.
An Eye Care professional does not administer the EyeQue test. You may make errors while using the PVT. While tracking your vision using the EyeQue PVT can reveal changes and fluctuations in your refractive errors, personal vision testing does not replace the need for an annual eye health exam.