Interesting discussion of "liability." As far as I can see, the liability amounts to ensuring that the eyewear is conforms within ANSI specs. And last time I looked, it is an issue of "unprescribed" prism. And when the prism tolerance is exceeded, then the 2.5mm total PD rule applies.
Today, a 2.5mm range will, IMHO, encompass just about *anyone's* ESTIMATE of their "PD". (This statement is why I cannot appreciate high fees for PD measurements).
Besides, with the history re OTCs, they'll need to "show the bodies" before any *actual* liability is logically assessed.
B
Bookmarks