How to Read Your Prescription

Understanding your eyeglass prescription is simpler than you think. Follow the examples below to enter your values correctly when ordering online.

Single Vision Prescription

If your prescription looks like the example shown, choose “Single Vision Lenses” and enter the values exactly as shown on your prescription.How to Measure Your PD?

Progressive Prescription

If your prescription is for progressive lenses, please follow the examples below to enter your prescription correctly.

Note: If your prescription does not include a PD value, please make sure to measure and provide your PD before ordering. How to Measure Your PD?

Sample 1

Enter the values exactly as shown on your prescription.

Sample 2: Convert to Decimal

+150 → +1.50
-75 → -0.75

Sample 3: Calculate ADD

Near OD +1.75 – Distance OD -0.50 = ADD +1.25

Note: These three examples represent the same lens prescription format. Convert values into decimal format when entering your order.

Reading Glasses

For near vision only.

Note: Reading glasses use Near PD, which may be different from your Distance PD. Please enter your Near PD if it is provided on your prescription.How to Measure Your PD?

Common Prescription Terms

Abbreviations

OD (Oculus Dexter): Right eye
OS (Oculus Sinister): Left eye
PL (Plano): No vision correction needed — enter 0
DS (Diopter Sphere): No astigmatism correction needed for this eye

Important Reminders

Please enter your prescription exactly as shown.
If your prescription does not include PD, you’ll need to measure or provide it separately.
How to Measure Your PD?