Can you help me with my prescription?

Your prescription is called an Rx for short and it contains a series of values that an optometrist measures to correct your vision with corrective lenses – either eyeglasses or contact lenses.

Your prescription will come as a table with two rows and a series of columns. The top row is always the right eye and is called the OD. The second row is always the left eye and is called the OS.

Each row of the prescription has several sections Sphere (Sph), Cylinder (Cyl), Axis, and ADD. The Sphere values correct nearsighted and farsighted vision. The Cylinder and Axis correct astigmatism. Lastly, the ADD is for Progressive Vision where glasses provide magnifying power to aid in reading or up-close viewing.

Another important piece of information we need is the Pupil Distance. This measurement is needed to place the optical center on each lens, and without it your glasses will not work properly or painlessly with your eyes. If your prescription doesn't have it or your optometrist will not give it to you, please consult our tips for measuring it yourself.

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• What are the abbreviations on my prescription?

  Here is a list of terms you can use to help better understand your prescription: Rx: The abbreviation for Prescription OD: Latin for Oculus Dexter, meaning the Right Eye. OS: Latin for Oculus Sinister, meaning the Left Eye. OU: Latin for Oculus ...

• Is my prescription too strong for glasses?

  It is a bit hard to know without knowing your prescription exactly; but, here is a list of what we are readily able to work with: Single Vision: Up to -20.00 or +12.00 on the Sphere (SPH) Up to +/- 6.00 on the Cylinder (CYL) Progressive Vision: Up to ...

• Can I get non-prescription glasses?

  Most definitely! You can order frames by selecting the frames you want and choosing 'Buy Now'. This will add just the frames to your cart and nothing else. In this case, however, the lenses placed into frames for sale by the manufacturer almost ...

• Can I send my own frame to get new prescription lenses installed?

  Unfortunately, we don't sell just lenses and therefore we can't accept liability of your frames to install prescription lenses in them. It's always a good idea to have a backup pair of frames anyway in case something should happen to your new pair.

• What is my PD (Pupil Distance or Pupillary Distance)?

  Pupillary Distance (or PD) is one of the numbers that you will need to enter in your prescription while buying your glasses online. It measures the distance in millimeters (mm) between the centers of your pupils. It is important to have an accurate ...