• 1-800-917-70-83
  • 100% Money Back Guarantee

    100% Money Back Guarantee At GlassesUSA.com, returns and exchanges are made easy. We do our best to make returns and exchanges as easy as possible. We are pretty confident that you'll love our product. However, if for some reason or other you're not completely satisfied with your glasses within the first 14 days of receiving them, you are entitled to a money back return or a 100% store credit. No questions asked and hassle-free.

  • Free Shipping & Returns

    Free Shipping & Returns Enjoy Free Shipping and returns on all orders (for orders in the US). If, for any reason, you are not completely satisfied with your order, you may return it within the first 14 days. We even provide you with a return shipping label, no questions asked!

  • 365 Day Warranty

    365 Day Warranty Seen it for a lower price? We will match it and give you an additional 10% off, guaranteed..

How can we help you?
Human support?
SHOP GLASSES

x

How do I read my prescription?

 

Understand Your Prescription

 

Sometimes prescriptions can be confusing, so we’ll explain the most common formats. Your prescription might look like these examples:

Sphere (SPH)
Indicates the strength of your prescription. Distance prescriptions will usually have a (-) before the number. Reading prescriptions will usually have a (+) before the number. Below you can find the sphere details marked in blue.

Cylinder (CYL)
This indicates the amount of lens power for astigmatism. If nothing appears in this column, either you have no astigmatism, or your astigmatism is so slight that it is not really necessary to correct it with your eyeglass lenses.

Axis (AXIS)
This describes the lens meridian that contains no cylinder power to correct astigmatism. The axis is defined with a number from 1 to 180. The number 90 corresponds to the vertical meridian of the eye, and the number 180 corresponds to the horizontal meridian.

Prism
Prism is prescribed to correct a muscle imbalance between the two eyes so it should help make your vision more comfortable.

ADD
magnification power for Bi-focals & progressives. The Additional Value (ADD) is commonly used for bifocal or progressive lenses as well as for reading glasses.
* It may be written in the near vision (N.V.) or “ADD” section of the prescription.
* Sometimes your doctor will write the “ADD” once - it will be equal for both eyes. Just insert the same number twice when ordering.
* If your prescription has an “ADD” and you only want single vision distance glasses - simply leave the “ADD” off of your prescription when ordering.
* If you're buying reading glasses, be sure to leave the ADD on your prescription!

Prescription Values explanations

Sphere (SPH)
Indicates the strength of your prescription. Distance prescriptions will usually have a (-) before the number. Reading prescriptions will usually have a (+) before the number. Below you can find the sphere details marked in blue.

Cylinder (CYL)
This indicates the amount of lens power for astigmatism. If nothing appears in this column, either you have no astigmatism, or your astigmatism is so slight that it is not really necessary to correct it with your eyeglass lenses.

O.S Left Eye

Axis (AXIS)
This describes the lens meridian that contains no cylinder power to correct astigmatism. The axis is defined with a number from 1 to 180. The number 90 corresponds to the vertical meridian of the eye, and the number 180 corresponds to the horizontal meridian.

Prism
Prism is prescribed to correct a muscle imbalance between the two eyes so it should help make your vision more comfortable.

O.D Right eye.

 
Have more questions? Submit a request

Comments

Powered by Zendesk