Serving Birmingham and All Surrounding Cities for 20+ Years.

How the Eye Works

Eyes are the organs of vision. Through a complex process, they detect and focus light to create images. Vision begins when light rays are reflected off of an object and enters the eye through the cornea and then pupil. It then passes through the crystalline lens which refracts light to be focused on the retina. By changing shape, the lens functions to change the focal distance of the eye so it can focus on objects at various distances.

How Vision Processes Light

When light hits the retina, tiny cells, rods, and cones capture the light signals and convert them into electrochemical impulses in neurons. Working together, these cells process the light to create an image by triggering nerve impulses that pass to the image centers in the brain via the optic nerve:

Rods

Communicate the object’s shape by reading black and white and shades of gray.

Cones

Communicate the color of the object.

It’s important to understand how the eye works so you can understand your body. The better informed we are about our health, the easier it is to note potential symptoms and to take an active role in preventative care.

Did You Know?

  • Rapid Healing: Eyes heal much faster than many other parts of the body. It can take as little as 48 hours for a corneal scratch to heal.
  • Brain Power: Our visual systems are so complex, they involve more than half of the brain to function properly.
  • Newborn Tears: You may think babies cry a lot, but the real tears don’t start flowing until babies are at least four weeks old. They cry before then, but no tears are produced.

If you have any questions about your vision or eye health, contact us right away. We are happy to have an eye care professional explain any of these concepts or evaluate your eye health.

Where Would You Like To Be Seen?

Select the location nearest you to view hours, services, and book your appointment.

Webb Eye Care at Hoover

James W. Webb, O.D.
Eyemart Express in the Hoover Grove

Webb Eye Care at Alabaster

Heather M. Webb, OD
Alabaster Walmart Vision Center