West St. Paul: 651-457-2020
Stillwater: 651-439-4265

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 Dakota Eye Care Associates 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 are happy to be back seeing routine eye care! When you come in for your next appointment you will see we have made several changes to prevent the spread of COVID-19, including the following:

1)  The number of patients we see in a day is reduced.  Both the number of available exam appointments and optical encounters will be kept to a minimum to allow for appropriate social distancing and limit the number of patients in our clinic at any given time.

2) When you arrive for your appointment, we will have you fill out a COVID questionnaire and we will screen everyone’s temperature upon arrival. If you have a mask of your own, please bring it along to your appointment.  Otherwise, we will provide a mask if you do not already have one. It will be required that you wear a mask for the entirety of your visit within the clinic. 

3) We will continue curbside dispenses contact lens and eye vitamins.  If you need to pick up any of these items, please call our front desk and a staff member will bring them directly to your car.

4) We require that patients arrive for their exams alone.  Patients can only be accompanied by one other person if they are either a) a minor or b) have mental/physical disabilities.  Again, any patient or caretaker entering the building must wear a mask.  Any accompanied person will be screened for temperature as well.

5) In addition, all of our staff and doctors will have their temperature checked prior to beginning their work day.  All staff will have proper PPE compliant with new regulations.  Although it may seem impersonal, we at Dakota Eye Care are working and will continue to work tirelessly to ensure the safety of both our staff and patients.  Our new policies in regards to social distancing, clinic hygiene, etc. will be posted for you to review.

We have spent the several weeks ensuring we're in compliance with every CDC hygiene guideline for safety of our doctors, staff and patients.  We are excited to get back to work, but in the safest environment possible.  If you have any questions on our new protocols, do not hesitate to ask.  We hope to see you soon and please stay safe!