The lens is rounder when viewing close objects so that it can cause greater bending of the incoming divergent light rays.
What degree of light bending is the lens capable of?
- In order to focus on both near and remote objects, the lens must be adjusted. Refraction is the process of bending light to create a focused image on the retina.
- The light should ideally be "refracted" so that the rays are focussed into a clear image on the retina.
- The retina is the target of the lens's light focus. The lens's shape is altered by the ciliary muscles of the eye, which bend or flatten it to direct light onto the retina.
- The lens must be adjusted, a process called as accommodation, in order to focus on both close-up and distant objects.
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