Everyone is born with a set of eyes and most people get to enjoy the gift of sight, but many people do not know how they transmit the image of what is in front of them to their brain. Today we are going to tell you about eyes and the parts of them that work together to help you see.
The main parts of eyes that make it possible for you to see include:
- When light is available, it travels through the clear outer layer of an eye, called the cornea, which flexes or relaxes to focus the light. The light then travels to the dark center, called the pupil.
- The light passes through the pupil which has its size adjusted by the colorful iris to help the rest of the eye receive the proper amount of light. The pupil is large in darkness, and gets smaller in bright lighting conditions. The light then travels to the lens.
- The lens works as the secondary focusing organ which either thickens or thins to focus on near or distant objects. The light then travels to the retina which is located at the back of the eye.
- The retina contains two types of nerves that sense light which are called cones and rods. The cones are located toward the center of the retina and detect most of the details of reflected light, while the rods are on the outer edge of the retina and detect non-detailed, reflected light. The cone and rod nerves then send the information to the optic nerve.
- The optic nerve makes it possible for people to see by sending the light information through electrical signals to the brain.
How the Eye Works (in order):
- When light is available, it travels through the clear outer layer of an eye, called the cornea, which flexes or relaxes to focus the light. The light then travels to the dark center, called the pupil.
- The light passes through the pupil which has its size adjusted by the colorful iris to help the rest of the eye receive the proper amount of light. The pupil is large in darkness, and gets smaller in bright lighting conditions. The light then travels to the lens.
- The lens works as the secondary focusing organ which either thickens or thins to focus on near or distant objects. The light then travels to the retina which is located at the back of the eye.
- The retina contains two types of nerves that sense light which are called cones and rods. The cones are located toward the center of the retina and detect most of the details of reflected light, while the rods are on the outer edge of the retina and detect non-detailed, reflected light. The cone and rod nerves then send the information to the optic nerve.
- The optic nerve makes it possible for people to see by sending the light information through electrical signals to the brain.
Schedule an appointment at Casa Grande Eye Care for a health examination today.
