When a progressive lens transitions from the distance power to the intermediate it starts very subtle for the first 4mm then it has a more dramatic power increase to the intermediate power (generally...
I observed no difference on the two people I tested under unfiltered summer sun (43˚ latitude), brown polarized, AR coated sunglasses, with a very good light seal, and clear AR coated eyeglasses.
Trickier to narrow down, since Hoya progressives...
Trickier to narrow down, since Hoya progressives basically can be divided into two rather different groups.
AndyOptom 04-16-2024, 11:10 PMWhile all their lenses here are freeform, their entry level designs are all full back...