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Home » What's New » How Do We See?

How Do We See?

Have you ever thought about how vision works? Seeing is an incredible gift made possible by a system in which the eye and the brain process visual information from the outside world. If any step of that process does not function properly, vision will be impaired.

Similar to a camera, the eye transmits light from the world around us into an image that we can perceive. Certain parts of the eye even function like the different parts of a camera such as the shutter, the lens and film (if we can hearken back to the days when we used film in cameras). Here is a quick breakdown of the fascinating way our eyes and brain enable us to see and experience the world around us:

The Vision Process

Light reflected from an object in our field of view is gathered by the cornea which is essentially the clear “window” to our eye. The cornea then refracts the light rays through the pupil (the center of the iris where light enters the eye). The iris, which like the shutter of a camera will enlarge and shrink based on how much light is coming in, then passes the image onto the crystalline lens. Just like a camera lens, the lens in the eye focuses the light rays, projecting them to a point at the back of the eye called the retina, where the image will appear upside down. The retina contains a thin layer of color-sensitive cells called rods and cones that perceive color.

From the retina, the visual signals travel to the brain via the optic nerve. The brain receives information from both eyes and must then converge the images (and flip them right side up) to get a complete picture.

Vision Problems

A breakdown in vision can happen at any point in this process. From the muscles that control the eyes, to the parts within the eye, to the pathway to the brain. Sometimes vision impairment is due to technical problems with the eye receiving the information and passing the signal on, such as convergence insufficiency (inability to coordinate the eyes to converge on one point), myopia (nearsightedness) or cataracts (clouding of the lens).

Other times, the eyes might work perfectly, but there is a problem with the brain interpreting the signals it receives. In these cases we can’t “see” in the traditional sense, because our brains aren’t able to properly “read’ the signals or we don’t know what we are looking at. This is the case for some learning disorders that are caused by the visual processes in the brain such as dyslexia.

As you can see, vision is quite a complicated process. A simple vision exam isn’t always able to determine vision problems, especially in children which is why it is so important to have regular comprehensive eye exams, to measure the health of the eye and all of its parts.

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As our community copes with the fast-moving spread of the COVID-19 coronavirus we hope you and yours are in good health during these stressful times.

Public officials have asked businesses to close down for a limited time while a local quarantine begins. 

We will be available for eyecare emergencies by appointment. Please contact us at 973-728-1101 if you have any questions and we will respond back as quickly as we can. All other emergencies please call 911.

If you need to order contact lenses you can do so by going to our website www.westmilfordvisioncenter.com and click on the contact lens order link on the left hand side of the screen.

When we are given the green-light to renew normal business operations we will update you. We thank you for your patience during this interruption and hope to see you when we re-open, happy and healthy.

West Milford Vision Center

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Even though we are closed we are still available to serve our patients. We are just a phone call away!

If you have an eye emergency, please contact us- we’re here for you.

If you need to order contacts, please visit our website and do it online.

Finally, we can also help you with eyeglass repairs or replacements.