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Making sense of your eye prescription chart. The numbers on your eyeglass prescription relate to the shape of your eyes and strength of your vision. They can help you figure out whether you have nearsightedness, farsightedness or astigmatism — and to what degree.
Here’s a quick summary: Which numbers are my right eye and which are my left eye on my prescription? In a typical prescription, two acronyms—one for each eye—are listed: O.D. This is short for oculus dexter, and is your right eye. O.S. This is short for oculus sinister, and is your left eye. What does “sphere (SPH)” mean on my prescription?
Whether it’s on paper or digital, your eye prescription probably looks like a small grid or chart with rows, columns, and cells. Confusingly, the chart incorporates a mix of letter abbreviations, positive and/or negative numbers, and full words.
Positive numbers on an eye prescription indicate they are correcting farsightedness, while negative numbers correct shortsightedness. A larger number suggests a stronger prescription.
The abbreviations and numbers on your eyeglass prescription describe the type and strength of lenses you need, and the degree of nearsightedness, farsightedness, or astigmatism in each of your...
Learn how to read your eyeglass prescription. Find charts, definitions, & learn how to decode your eye prescription at LensCrafters.
Understanding your eyeglass prescription is easy! Learn how to read it with Zenni Optical's examples of common types.
Oct 24, 2024. Table of Contents. What is an Eye Prescription? Why Your Prescription Matters. Reading the Prescription Layout. Understanding the Key Components. 1. Eye. 2. Sphere (SPH) 3. Cylinder (CYL) 4. Axis. 5. Add (Addition) 6. Prism. 7. Pupillary Distance (PD) What to Do with Your Prescription. Tips for Ordering Glasses or Contacts.
An eye prescription specifies the values needed for your corrective eyewear. Your prescription will usually contain the following information: OD & OS; SPH; CYL; Axis; Add ; Prism ; A prescription for glasses is different from a contact lens prescription.
Your eye prescription reveals a lot about your eye health, including how they’re shaped, how well you see and what your new glasses can do for vision.