Can this be a shifting exercise?

[ClarkNight]

Here's a new eyeglass place that also does height of the eyeglass lens and other frames settings;



The website; http://www.visio-rx.com/


They are saying that most other online optical stores just do P.D. and hide the fact that the height of the lens; so is centered exactly and the frame size for the ears, head.... are also very important to get correct.

Here's selectspects;