He bent over it, blinking his protuberant eyes rapidly, an additional lens slipping into place at each blink.

In some cases, surgeons may opt for inserting an additional lens over the already implanted one.

Astigmatism, irregular shaped cornea requiring additional cylindrical corrective lenses in spectacles.

On Sep. 6, 2012, Fujifilm announced two additional lenses for its X-mount:

Magnification means that the image formed on the back of our eyes is larger than if we looked at the object without the benefit of the additional lenses.

Telescope designs may also use specially designed additional lenses or mirrors to improve image quality over a larger field of view.

They have an additional lens at the side of the eye which focuses light onto a separate retina.

The film was captured entirely using iPhone 4, with the additional extra lenses and otherwise regular filmmaking equipment.

They were not merely binoculars; they had additional special lenses that helped his nearsightedness.

Later in the game, Django can find additional lenses that convert the sunlight to elemental attacks.