Even though it was broad daylight, the lenses worked extremely well, for things that were warm stood out beautifully against the cold and snowy background.

This position, also referred to as a specific f-number, is where the lens works best and optical errors are reduced.

The lens worked like a low-powered telescope, giving a view slightly better than the naked eye.

The lenses work by filtering and focusing light on an underlying photoreceptor system.

Any added glass element, no matter how optically perfect, will affect the way a lens works.

"It means the lenses are working exactly as they are supposed to."

Holly tapped her helmet to make sure the lenses were working.

It's not going to make much matter if the lenses don't work then.

The lenses work especially well for people who are nearsighted or farsighted.

He also states, as though it were obvious, that the lens and the retina cannot work without each other.