Lens

Definition

In the context of anatomy and physiology, specifically within the topic of sensory perception in the somatic nervous system, the lens is a transparent, flexible structure located behind the iris of the eye that focuses light rays onto the retina to create clear images. It adjusts its shape for near or far vision through a process called accommodation.

Related terms

Retina:

The light-sensitive layer at the back of the eye that converts light into neural signals sent to the brain for visual recognition.

Accommodation: The process by which the eye's lens changes shape to focus on objects at various distances, allowing for clear vision across a range of distances.

Iris:

The colored part of the eye surrounding the pupil that regulates the amount of light entering the eye by adjusting pupil size