• FREE SHIPPING
    • - Fast Domestic & International Delivery*
    • - Secure Service with Leading Delivery Companies
    • - FREE SHIPPING for orders over RM310
    • More Info >
  • 100 DAY RETURNS
    • - Easy, No-Hassle Returns Within 100 Days
    • - 2 Year Warranty on ALL Sunglasses & Eyeglasses
    • - 2 Year Warranty on ALL Prescription Eyewear
    • - 3 Month Warranty on ALL Contact Lenses
    • More Info >
  • BEST PRICE GUARANTEE
  • FREE LENSES
    • We offer free basic 1.5 index lenses on all prescription eyeglasses. We provide opportunities to upgrade and add features during checkout. We make shopping online for your glasses simple, efficient and safe.

Optician Q&A

?
Do you still have questions? Ask here

How do I read my prescription?

Answer:

Do you ever feel like your glasses prescription looks like a different language? To most people it does, but in fact, these numbers are very important and explain a lot about how your eyes see the world around you. 

Whether you are nearsighted, farsighted, have astigmatism or need bifocals, your prescription is unique and made just for your eyes.


The first terms you should see on your prescription are OD and OS. These are abbreviations for the Latin terms oculus dexter and oculus sinister, which mean right eye and left eye, respectively. 

If your OD or OS prescription is a negative power (i.e. -4.00), this means you are farsighted and can see objects far away but not close up. If your OD or OS prescription is a positive power (i.e. +4.00), this means you are nearsighted and can see objects close up but not far away. The larger the number, the stronger your prescription power is. 

Some people have identical OD and OS powers while other people can have different powers for each eye. These eye conditions are extremely common. 

Other terms you may see on your glasses prescription may include the following: 

Sphere (SPH). This number indicates the amount of lens power measured in diopters (D), prescribed to correct your nearsightedness or farsightedness. 

Cylinder (CYL). This number indicates the amount of lens power for astigmatism. If nothing is listed in this column, it means you either have no astigmatism or that your astigmatism is so slight that you do not need a corrective lens to fix it.

AXIS. This number describes the lens meridian that contains no cylinder power to correct your astigmatism. The axis is defined with a number from 1-180 and 90 corresponds to the vertical meridian, while 180 corresponds to the horizontal meridian.  

ADD. This number is the added magnifying power applied to the bottom part of multifocal lenses to correct presbyopia. The number that appears in this section is always positive, even if it is not preceded by a plus sign. ADD will generally range from +0.75 to +3.00 D and it will be the same power for both eyes. 

Pupillary Distance (PD). This number measures the distance in between your 2 pupils in millimeters.

For more information on how to read your prescription, check out our helpful video. 

Was this question helpful? Thanks for your feedback!

Sign up for a free, exclusive membership

Register
OR
Sign in with Facebook

Exclusive Features

  • Order Tracking
  • Easy Re-Order
  • Saved Prescriptions
  • Express Checkout
  • Exclusive Discounts and Sales
By joining SmartBuyGlasses you agree to the Terms & Conditions

Sign up for a free, exclusive membership

What is your gender?

When is your Birthday?

Sign up for a free, exclusive membership

What is your gender?

When is your Birthday?

Subscribe to our Newsletter
By joining SmartBuyGlasses you agree to the Terms & Conditions

Thanks,

You are all set!
Visit Membership

Forgot Password

Please enter your email below. We'll send you a link to reset your password.
Send E-Mail

Having trouble?

Don't hesitate to Contact us

Forgot Password

We've sent an email with instructions on how to reset your password.

If you don't receive instructions within a few minutes, check your email's spam and junk filters.

Having trouble?

Don't hesitate to Contact us

Reset Password

Password must be at least 8 characters.
Save and Sign In

Having trouble?

Don't hesitate to Contact us

STYLE FINDER

Get personalized eyewear recommendations with our style finder and find the perfect pair for you.

Are you a…

Woman

Man