Before you can complete a purchase, you must have a valid prescription and specific measurements that may not always be included by default:
: Ensure your exam is current (usually within the last 1–2 years). It should include values for Sphere (SPH), Cylinder (CYL), and Axis (for astigmatism). buy prescription
: This is the distance between your pupils in millimeters. It is critical for aligning the optical center of the lens with your eyes. While doctors aren't always required to provide it, you can request it or measure it yourself using a ruler or apps like [GlassesOn](url from result). Before you can complete a purchase, you must
The choice between online and in-store retailers depends on your budget, prescription complexity, and need for personalized fitting. Before you can complete a purchase