In the heat and the rain – that's where you typically expect to see rainbows. A nice spring day, a light shower, and a pot of gold hidden off in the distance. Not so much when it comes to your lenses. Anyone that's dealt with lenses long enough has experienced this before – an oil-slick like effect, or rainbow, in the lenses. As this is one of the few places in life where you … [Read more...]
Abbe Number …
What is it? The optical business is filled with technical terms that we hear all the time. We read articles, sit in education classes, listen to sales representatives, and talk with colleagues seeing, hearing and talking about these terms. How many of us really know what these terms are? Where did they come from? Do they even matter? I am going to tell you the tale of one of … [Read more...]
Aspheric Lenses:
A Design, Not a Material What is an aspheric lens and why would you want to recommend one? Isn't polycarbonate good enough? Or high index? Or Trivex? Many opticians ask these questions because they are confused about what an aspheric lens is and how it benefits patients. Polycarbonate, high index and Trivex are wonderful materials for ophthalmic lenses. The confusing part is … [Read more...]