Chadwick Optical, Inc.

This one started with a great question from a viewer, and honestly, we love a good “why.” Someone asked why we wouldn’t just lenticularize a high plus lens to make it thinner. It’s a fair question, and the answer says a lot about how lens design actually works, so we wanted to walk through it.

A Quick Demonstration

Here’s an easy way to picture the problem....

If you’ve ever poked around our website, there’s a good chance you found your way to our transposition calculator. It’s the single most visited page we have, by a wide margin. Since so many people are curious about it, we figured it was time to pull back the curtain and explain what transposition actually is, why it exists, and how it plays a role in making your glasses.

...

If you’ve picked up a new pair of glasses in the last few decades, chances are good you walked out with polycarbonate lenses. Maybe nobody explained why. Maybe you were just told it’s what “everyone gets.” There’s a reason for that, and it has less to do with what’s best for your eyes and more to do with what’s best for a factory floor.

Let’s walk through it.

...

You have two eyes. Chances are they don’t see things exactly the same way.

That’s the idea Charlie Saccarelli walks through in his latest video, and it’s one that doesn’t get talked about nearly as much as it should. Most of us assume that once we’re wearing the right prescription, our eyes are set. But prescription is only part of the story. The real question is wh...

We get this question a lot, so we figured it was worth explaining properly. If someone has a homonymous hemianopia, meaning they've lost the same side of vision in both eyes, why would we only put the Peli prism lens in one eye? The vision loss affects both eyes. Shouldn't the help go in both eyes too?

It's a fair question. Here's what's actually g...