Just to confuse the issue a little more it is Silver Halide in photochromic glass. This was a offshoot of a defense dept project to instantly darken...
Yes. SOP for monocular vision in my book. Here's a nice visual representation of the scotoma, and how the vision is in, then out due to the scotoma,...
When the grays or black are showing red, change them. For other colors, change them when the colors are no longer vibrant or if the lenses are taking...
More important is how many lenses you are tinting. On sun tints I would not go more than 20 lenses and maybe even less. Consider what you charge for...
Hey, I meant that she should fit the frame for distance position and figure out how far away from the old eyeball it's going to be, then correct the...
What do you mean you don't know where the markings are? They are engraved on the lenses 34mm apart. Almost all PALs use a 4 drop and the DRP is just...
