Great questions!
I will add a section with measuring tips. Thanks for the feedback!
For pupillary distance, you would want to get that measurement from your eye doctor for the best accuracy. It is something you may need to request that they do when getting your prescription. Some vendors provide instructions for measuring that I can use to fill out the new information I will add.
For some of the other measures, typically frames are marketed using the lens width, bridge width, and temple length so you may even be able to find your frames online and get those numbers without too much fuss.
Point definitely taken there needs to be more information for folks who don't have access to these numbers on how to get these numbers.
