Getting a pair of glasses with the correct lenses is essential for clear, comfortable vision. However, once you’ve had an eye test, understanding the numbers and terms on your prescription can feel overwhelming. If you’ve ever stared at your prescription wondering what "SPH," "CYL," or "Axis" means, you’re not alone!
This guide will break down your glasses prescription step-by-step so you can confidently order the right glasses online and enjoy crystal-clear vision.
Why Do You Need a Prescription for Glasses?
A prescription is a precise measurement of the correction your eyes need to achieve perfect vision. After a thorough eye test, your optometrist will issue this document based on the type of vision issues you have, such as near-sightedness, far-sightedness, or astigmatism.
When Should You Get an Eye Test?
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Adults: It’s recommended to have an eye check-up every 2-3 years.
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Children: Kids should have their vision tested annually.
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Over 65s: Seniors often require more frequent check-ups due to age-related vision changes.
Skipping regular tests can result in wearing outdated lenses, leading to headaches, eye strain, and blurry vision.
Breaking Down Your Glasses Prescription
When you receive your prescription, you’ll typically see a mix of numbers and abbreviations that might look complex. Here’s a detailed explanation of each part:
1. Sphere (SPH)
The "Sphere" value indicates the lens power needed to correct near-sightedness or far-sightedness:
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Negative (-): Corrects near-sightedness (myopia).
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Positive (+): Corrects far-sightedness (hyperopia).
Example: SPH -2.00 means mild near-sightedness, while SPH +1.50 indicates slight far-sightedness.
2. Cylinder (CYL) and Axis
These values are used to correct astigmatism, a condition where the eye’s shape causes distorted or blurry vision.
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Cylinder (CYL): The lens power needed to correct astigmatism.
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Axis: Specifies the direction of the astigmatism correction, measured in degrees (1–180).
Example: CYL -1.00, Axis 90 means the lens corrects curvature vertically.
If your prescription doesn’t include CYL or Axis, it means you don’t have astigmatism.
3. ADD (Addition)
ADD refers to the additional power needed for reading or close-up work, common in multifocal lenses for individuals over 40.
Example: ADD +2.00 means an extra magnification for reading glasses.
4. Prism and Base
Prism correction is rarely needed and is prescribed for eye alignment issues like double vision.
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Prism: Indicates the strength of the correction.
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Base: Specifies the direction of the correction (up, down, in, or out).
How to Use Your Prescription to Buy Glasses Online
Ordering glasses online is simple and convenient with an up-to-date prescription. Here’s how to do it:
Step 1: Review Your Prescription
Look at the SPH, CYL, Axis, and ADD values carefully to ensure everything is accurate.
Step 2: Enter Your Prescription Online
When shopping at Lenses Direct, you can easily input your prescription details or upload a photo of your prescription.
Step 3: Choose Your Lenses
Select single vision, bifocal, or progressive lenses depending on your vision needs.
Step 4: Add Enhancements
Consider adding extras like anti-reflective coatings, blue-light filters, or transitions lenses for added comfort.
Step 5: Complete Your Order
Finalise your purchase, and your customised glasses will be delivered straight to your door.
Common Questions About Glasses Prescriptions
Can I Use an Old Prescription?
No, it’s best to use a recent prescription, as your vision can change over time. If your prescription is over two years old, book a new eye test for accuracy.
How Do I Know If My Prescription is Correct?
If you experience clear vision with no discomfort like headaches or eye strain, your prescription is accurate. Otherwise, consult your optometrist.
Is My Contact Lens Prescription the Same?
No, contact lens prescriptions differ because lenses sit directly on your eyes, while glasses are positioned slightly away from them.
Why Choose Lenses Direct for Prescription Glasses?
At Lenses Direct, we simplify buying glasses online with your updated prescription:
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Affordable Prices: Up to 65% cheaper than retail stores.
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Wide Range of Styles: Find frames that suit your taste and budget.
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High-Quality Lenses: Accurate, durable lenses tailored to your prescription.
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Easy Process: Upload or enter your prescription with ease.
We ensure your lenses are crafted to perfection, so you can enjoy crystal-clear vision without hassle.
Reading Your Glasses Prescription Made Easy
Understanding your glasses prescription doesn’t have to be confusing. By learning what SPH, CYL, Axis, and ADD mean, you’ll feel confident using your updated prescription to order the right glasses.
If you’ve recently had an eye test and need a new pair of glasses, look no further than Lenses Direct. We offer affordable, high-quality glasses that match your prescription perfectly.
Shop online today and discover stylish, comfortable eyewear tailored to your vision needs!
