Felix Gray has worked with Optimized Eye Care to identify lenses that are similar to Felix Gray's contact lenses. When taking the test, provide the contact lens shown on your pre-existing prescription. Your reviewing doctor will review the results of your test, your medical profile, and other information provided to determine, in their sole discretion, if Felix Gray contact lenses are right for you. If so, you'll receive a renewal of your pre-existing prescription alongside a prescription for Felix Gray contact lenses.