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.

When light hits the retina, tiny cells, rods, and cones capture the light signals and convert them into electrochemical impulses in neurons. Rods communicate the object’s shape by reading black and white and shades of gray. Cones communicate the color of the object. Working together, the rods and cones process the light. They then create an image by triggering nerve impulses that pass to the image centers in the brain via the optic nerve.

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:

  • 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.
  • Our visual systems are so complex, they involve more than half of the brain to function properly.
  • 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 (and even while in the womb), but no tears are produced.

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

Watch this video to learn more about how your eyes work!

We want to express our appreciation to all of you for your patience with us during this crazy time.  We have remained open to see urgent and emergent patients and are slowly beginning to increase the number of patients we see per week.  We have staggered schedules to only have one doctor and their required support staff in the office.  We have staggered patient times such that only one patient is seen at a time.  As such, we must still prioritize those with the greatest need for our services since we are seeing only a fraction of our customary number of patients.  Please understand that you are all very important to us and we look forward to seeing you as soon as practically possible.
We are still offering telemedicine for urgent needs that can be managed outside of the office.

If you come into our office for an appointment, this is what you can expect…
You will receive a phone call from us before the day of your appointment to go over your recent history and other pertinent information to facilitate your time with the doctor during the exam.  If we are unable to have this conversation, your appointment will need to be rescheduled.

Please park near the front entrance (west facing) when you arrive and call our number (524-9561) to announce your arrival.  Our doors are locked to limit the number of patients in the office at any one time.  One of our staff members will review a COVID risk questionnaire with you and take your temperature prior to your entering our office.  We require that you wear a clean mask to your appointment. If you require support or assistance or are under the age of 18, you may have one person accompany you (provided they pass the COVID questionnaire as well).  In an effort to reduce the number of potential contamination points, please leave any unnecessary items in your vehicle (hats, cell phones, etc.).  Nonessential visitors that accompany patients will be required to stay in their vehicle.

Our frame gallery is open on an appointment basis only.  The same precautions shall apply.  All frames are sterilized following handling.

Patients, parents and essential care providers with a temperature of 100.4 or higher or answer yes to any of the COVID-19 questions will not be allowed entry into the office.  If you do not have a mask, one will be provided for you.

Everyone’s health and wellness are our number one priority.  We are following the CDC and the AOA’s recommendations regarding COVID-19.  As guidelines change in the upcoming months, we will adapt accordingly.

Thank you very much for entrusting us with your care during this unprecedented time.