Understanding your eyeglass prescription is easy! Learn how to read it with Zenni Optical's examples of common types.
OD (Oculus Dextrus): Refers to your left eye. OU (Oculus Uterque): Refers to both your eyes. D (Diopter): This is represented by a number on your eye prescription that shows how much focusing power is needed to correct your vision PD (Pupillary Distance): This number is the distance...
‘Axis’ refers to the orientation of astigmatism, it is the number between 1 to 180. So, with astigmatism you must have a Axis number and vice versa. ‘PD’ (pupillary distance) represents the distance between your eyes. This number is important for the production of prescription eyeglasses...
Now that you understand those mysterious letters and numbers, you know how to read a glasses prescription! Knowing what they mean will also help you more easily discuss your prescription with your eye care professional. Shop eyeglassesShop prescription sunglasses...
The various components of an eye prescription can be complicated, but we'll explain them all so you knowhow to read glasses prescription, even if your prescription changes. Remember, it takes time to adjust to new glasses, so if your prescription has changed, or you use yourglasses insurance...
CYL indicates the lens power needed to correct it, and AXI indicates the curvature of your cornea. The PD value (Pupillary Distance) measures the distance between your pupils, and ensures the centre of the lens is in the right place. Can’t find your PD in your prescription? Use our ...
At first glance your eyeglasses prescriptions might look like a bunch of confusing numbers, symbols and abbreviations. Here is a guide to help you understand this information. Your prescription might look like this: Example 1: Example 2: (SPH) (CYL) (AXIS) (O.D.) R: -2.50 / -0.50 ...
CENTRES, PD or IPD: This value indicates your inter-pupillary distance and is expressed in millimetres. It measures the distance between your pupils. It can be written in two ways in your prescription: total value (Example: total DP 63) or for each eye (Example: OD 32, OI 31). ...
HOW TO GET YOURS? You can ask your eye doctor to include your PD measurement on your prescription, or if you don’t have it, you can use one of the following methods to measure it—it’s super easy! With the Opthy app By yourself With the help of a friend ...
Where is my PD on my prescription? What happens if my pupillary distance measurement is off? Does PD affect frame size? Does PD change over time? Is PD important for single vision glasses? What is the difference between ‘single’ and ‘dual’ pupillary distance?