Whether you prefer dailies or monthlies, have astigmatism, or tend to get dry eyes, here are the best contact lenses ...

But the other two are surprisingly sophisticated; like Nilsson’s eyes, they have light-focusing lenses and can see images, albeit at lower resolution. Nilsson uses his eyes to, among other ...

Otherwise, frames can become misaligned. Even clean lenses are less than effective if they aren't positioned properly in front of the eyes.