How Do Eyes Work?

Isn’t it funny how we take certain things for granted? When we can see well, we may not even take notice of our eyes. But, when there’s a problem that affects our vision, our eyes may be the only thing we can focus on. But, paying attention to something that is going wrong isn’t a bad thing. In fact, that helps us stay safe and protect ourselves. Keep reading to learn more about our eyes and how they work.


Did you know that the eye is made up of complex structures that contains its own circulatory system? The process of being able to see begins when light enters the cornea of the eye and travels through the natural crystalline lens. Light is then focused on the retina, which is located at the back of the eye.

The macula of the retina is a small, centrally located spot which contains a cuplike depression, (also called the fovea). This is closely packed with cones which allow us to have our clear, precise vision. Once images of light are focused on the macula, the optic nerve can shoot these images to the brain where they are translated into what we process and recognize as sight. This process occurs almost constantly each day (as we look around) and is dependent on the correct function of many parts all working together.


It is easy to understand how all systems must be working properly for the eye to function as it should and give us good vision. The most common vision problem, refractive error, can often be improved with modern procedures such as LASIK or PRK. Of course, glasses and contact lenses can assist, too. So if you are considering LASIK, suffering from diminished vision due to cataracts, or you are concerned about your family history of glaucoma, see us for early diagnosis and amazing treatment options.

These are common eye problems that we can look out for:

  • Refractive error
  • Cataracts
  • Glaucoma

If you want to learn more about your eyes and how to keep them healthy, give us a call. Dial 847-677-2794 to schedule a consultation with Dr. Sondheimer today!

Posted in: Eye Health

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9150 Crawford Ave, Suite 201
Skokie, IL 60076

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As the COVID-19 (Coronavirus) pandemic and its impact continues to evolve, we remain focused on the health and safety of our patients, employees and our fellow community members. One main goal throughout this crisis is to provide the safest environment for everyone.

In response to the state of emergency declared at the federal level and at the recommendation of the Center for Disease Control and the American Academy of Ophthalmology, Stuart P. Sondheimer, M.D., S.C, will be only seeing urgent and post-surgical patients, until further notice.

These are difficult times for us all. We will be monitoring the situation closely. Please take care of yourself and others.