How To Buy Prescription Glasses May 2026

The primary lens power. Negative (-) means nearsightedness; positive (+) means farsightedness.

While most prescriptions include the power of your lenses, many do not automatically include your Pupillary Distance (PD) . Explicitly ask for this measurement during your exam, as it is essential for centering your lenses correctly. 2. Understand Your Prescription how to buy prescription glasses

The most critical step is a comprehensive eye exam with an optometrist or ophthalmologist to ensure your corrective measurements are current. Prescriptions typically expire every 1–2 years. The primary lens power

Don't be intimidated by the numbers. Here is a quick breakdown of common terms: how to buy prescription glasses