Q & A

1. How to read your prescription

Single vision (Distance only) : This is the most common for single vision

Progressive or Bifocal : for Multifocal glasses, as well as reading and

computer glasses, Your Rx will include an 'ADD' or NV value

ADD: this number always has a (+) sign

2. How to measure your PD ( Pupillary Distance)


In most cases, it is not written in the prescription. 

You can measurement by yourself!