You must visit an eye doctor (optometrist or ophthalmologist) for a comprehensive eye exam and a specialized "fitting".
You are not required to buy lenses from the doctor who performed your exam. How to Buy Contact Lenses - CooperVision
Prescriptions are typically valid for one to two years , depending on your state's laws. 2. Choose Where to Buy
To buy contact lenses, you must follow a regulated medical process to ensure the safety and health of your eyes. Because lenses sit directly on your cornea, they are classified as medical devices and require a specific , which is different from a standard glasses prescription. 1. Get a Contact Lens Prescription
The doctor measures your eye's curvature, diameter, and tear film to determine the best lens type and brand for you.
By law, your doctor must provide a copy of your contact lens prescription immediately after the fitting is complete, even if you don't ask for it.
