Read Prescription

Understanding your eyeglass prescription allows you to enter your prescription accurately when ordering glasses online and to communicate confidently with your eye care professional. :contentReference[oaicite:1]

After an eye exam, your eye doctor gives you a written prescription that tells the optical lab how to craft lenses tailored to your vision needs. The numbers and letters may look confusing at first, but each has a specific meaning related to how your vision is corrected. :contentReference[oaicite:2]

• **Sphere (SPH):** Indicates the basic lens power you need. A **minus (-)** value means you are "nearsighted" (difficulty seeing distant objects), while a **plus (+)** value means you are "farsighted" (difficulty seeing close objects). :contentReference[oaicite:4]
• **Cylinder (CYL):** Shows the amount of astigmatism correction needed if your eye's surface is irregular. :contentReference[oaicite:5]
• **Axis:** A number between **0 and 180 degrees** indicating the orientation of the astigmatism correction. It appears only when there is a CYL value. :contentReference[oaicite:6]

**PD** is the distance in millimeters between your pupils' centers and ensures lenses are centered correctly for comfortable vision. It can be listed as one number (binocular PD) or two numbers (monocular PD). :contentReference[oaicite:9]