How to Read Your Glasses Prescription & Order Online (2025 Guide + Zeelool Coupon)
Ordering glasses online is easier than ever—but it all starts with understanding your prescription. Those abbreviations, numbers, and plus/minus signs can look intimidating, but once you know what they mean, you can confidently shop for stylish, affordable glasses from places like Zeelool.
In this guide, we’ll break down what each part of your prescription means, how to measure your PD (pupil distance), and how to use a Zeelool coupon code (BSJ20) to save money on your order.
👓 Step 1: Understanding Your Prescription
Most glasses prescriptions include the following:
- OD (Right Eye) & OS (Left Eye): These tell you which eye the numbers belong to.
- SPH (Sphere): Corrects nearsightedness (-) or farsightedness (+).
- CYL (Cylinder): Indicates astigmatism correction.
- AXIS: Works with CYL to correct astigmatism.
- ADD: Extra magnifying power, usually for reading or progressive lenses.
- PD (Pupil Distance): The distance between your pupils in millimeters.
🧪 Step 2: Measuring Your PD
Some prescriptions include PD, but if yours doesn’t, you can measure it yourself:
- Stand in front of a mirror.
- Hold a ruler across your brow line.
- Close your right eye and line up the ruler’s zero with the center of your left pupil.
- Open your right eye, close your left, and note the measurement to the center of your right pupil.
- That’s your PD (e.g., 62 mm).
💻 Step 3: Ordering Glasses Online
Once you have your Rx and PD, you’re ready to shop:
- Browse Zeelool for frames you love.
- Choose Prescription Lenses on the product page.
- Enter your SPH, CYL, AXIS, and PD carefully.
- Select lens type (single vision, progressive, blue light, etc.).
- Add coatings (anti-reflective, scratch-resistant, UV protection).
💸 Step 4: Applying the Zeelool Coupon Code
Don’t forget to save money at checkout:
- Add your frames and lenses to the cart.
- At checkout, enter BSJ20 into the Promo Code box.
- Click Apply → your total should drop by 20%.
Example savings:
- $30 frames → $24
- $70 prescription glasses → $56
- $100 bundle → $80
✅ Final Tips for Ordering Glasses Online
- Double-check your signs (+/-)—a common mistake.
- Match frame size to your current glasses for comfort.
- Consider a backup pair—online glasses are cheap enough to grab a spare.
- Always test your coupon code (BSJ20) before paying to lock in your discount.
