1.56 index Anti-Blue Ray progressive free form Lenses Prescription Spectacles Eyewear Vision Degree Lens Eyeglasses Lenses

1. 1.56 Anti-Blue Ray mid-index progressive free form backside no-line bifocals with anti-reflective and anti-scratch

2. Thin and more vision area

3.  Offer distance vision, middle vision and near vision in one lens

How to read your prescription:

On a typical prescription, you will see two sets of rows. Most of the time top portion is for your OD or right eye while the bottom portion is for your OS or left eye. 

For Distance correction, there should always be a value under Sphere and most of the time it is negative. Its abbreviation is 'D.V.' which stands for Distance Vision.

For Reading-only correction, there should always be a value under sphere and most of the time it is positive. If there is a value under Near Vision (N.V., N.V.O.) then enter the power in the BOTTOM half of the form and leave the ADD power blank or ("0.00").

For astigmatism correction, please note that that Cylinder (CYL) and Axis are always provided together. For any value of Cylinder there should always be a value for Axis. Some doctors use positive (+) cylinder and some uses negative (-), there is a big difference between the two so please pay close attention to the positive and negative signs. If you don't have astigmatism correction, doctors might just leave it blank or simply SPH or DS which means Sphere or Diopter Sphere. Axis should be from 1-180 degrees, if you see a value like '5' under axis, this is also the same as '005' or '5 degrees'. It should always be a whole number and there should be no decimal point on the axis.

For Bifocals and Progressive lenses, please check with your eye doctor whether the Addition is for Bifocals or Progressive. Most of the time, compared to the Bifocal Addition, the Addition of the Progressive is higher by 0.25, so please verify. An indication to know if your prescription is for Progressive is a PAL note written on the prescription; only one ADD means the addition for the Left and Right eyes are the same. Please be advised that we process a minimum of +1.00 and maximum of +3.00 for Addition powers.

Eye Doctors will sometimes leave out the decimal point on the Sphere, Cylinder and Addition. For example, -25 or +175, this is understood -0.25 and +1.75.

Very importantly, pay close attention to plus and minus sign as this will greatly affect the lens. If there is anything on the prescription you are not familiar, please call our Customer Service and we will be happy to assist you.

What is your pupillary distance(PD) and how to obtain it:

 PD, or pupillary distance, is the distance from the center of the pupil (the black spot in the eye) of one eye to the other. This measurement refines the positioning of your lenses within the frame you have chosen. It can be provided in minutes by your optician or doctor, and so we recommend that you ask for it when you have your vision checked. Alternatively, you may ask someone to measure it for you but advise them to be at about an arm's length away from you. You can also measure by yourself by facing a mirror. For single vision lenses, you may choose to use an average PD of 63mm, but for Bifocal or Progressive lenses, we still strongly recommend to get this information from your optician. For your information, most adults' PD is between 55-65mm. Sometimes doctors will provide two different values for PD, below are some scenarios:

a. The values are higher like 65/60, the first PD is usually for Distance PD and the second is for Reading PD
b. The values are lower like 33.5/31.5, the first PD is usually for the Right Eye and the second is for the Left Eye.
c. The values are the same like 30.5/30.5; you can add these two values together as we only have one field for PD. We will just divide it on our end.