3 ms·
I don't think the doctors normally measure the PD, they leave that to the ones who cut the glasses. That really does cause problems for doing it online, though
by LorenPechtel 8y ago
I don't think the doctors normally measure the PD, they leave that to the ones who cut the glasses. That really does cause problems for doing it online, though.
- fencepost 8y agoPD is actually an automatic part of having that big mass of lenses up against your face and properly positioned for testing. If they don't have that adjusted properly you're not going to see much.