Have you ever looked at your eyeglass prescription and thought, "What do all these numbers mean?" Don’t worry—you’re not alone! Eyewear prescriptions may seem like a secret code, but once you break it down, it’s actually pretty straightforward. In this blog, we’ll explain what those numbers and abbreviations mean, how your prescription may change over time, and how glasses and contact lens prescriptions differ. We’ll even help troubleshoot common issues, so you always get the clearest, most comfortable vision possible. Understanding Your Eyeglass Prescription A typical eyeglass prescription will include a table with abbreviations like SPH, CYL, AXIS, and ADD. Here’s what each means: SPH (Sphere) What it means: The amount of correction (in diopters) needed for nearsightedness or farsightedness. Negative (-) values: You’re nearsighted (can see close-up, but not…
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