This allows the handset to focus on objects in a fraction of a second. (killerfeatures.com)
Now imagine you're not around and this happens — she would be off like a rocket, laser - focused on the object of her excitement. (cesarsway.com)
Located just behind the pupil, the lens focuses light rays on the retina which can alter its shape and allow the eye to focus on objects at various distances. (heikemoras.com)