Vision

Definition

Vision refers to the sense of sight, allowing us to perceive and interpret the world around us through our eyes. It involves the process of light entering our eyes, being focused by the lens onto the retina, and then converted into neural signals that are sent to the brain for interpretation.

Related terms

Retina: The retina is the innermost layer at the back of our eye that contains specialized cells called photoreceptors (rods and cones) which convert light into electrical signals.

Optic Nerve: The optic nerve is a bundle of millions of nerve fibers that carries visual information from the retina to the brain for processing.

Blind Spot: The blind spot is an area on each retina where there are no photoreceptor cells present. This occurs because this region is where the optic nerve exits the eye, so it lacks receptors for detecting light.