Can You Use a Contact Lens Prescription to Order Glasses Online?

A common question among those new to buying glasses online is whether they can use their contact lens prescription to order glasses. The short answer is no; you need a specific prescription for glasses. Here’s why. 

Contact lens prescriptions and glasses prescriptions differ in several ways. Contact lens prescriptions include measurements for the curvature and diameter of the lenses, which aren’t needed for glasses. They also typically have different sphere (SPH) values because contact lenses sit directly on your eyes, while glasses sit a bit away from your face. 

For glasses, you need a prescription that includes sphere (SPH), cylinder (CYL), axis, and possibly an ADD (for multifocal (bifocals and varifocals) lenses). Additionally, you’ll need your pupillary distance (PD), which is not part of a contact lens prescription. This measurement ensures the lenses align correctly with your eyes. 

If you only have a contact lens prescription, you’ll need to visit your Optometrist to get a proper glasses prescription. Many eye care providers will provide both prescriptions during a single exam, so be sure to ask for both, next time you have your eyes checked. The eye examination for glasses and the contact lenses assessment and aftercare are all different types of examinations. 

Having the correct prescription is essential for optimal vision and comfort. Using an incorrect prescription can lead to headaches, eye strain, and blurred vision. Therefore, always use the specific prescription for glasses when ordering online. 

By understanding the differences and ensuring you have the correct prescription, you can successfully order glasses online and enjoy clear, comfortable vision.