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Family Eye Care

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Lake Erie
Family Eye Care

How the Eye Works

To understand how the human eye works, first imagine a photographic camera—since cameras were developed very much with the human eye in mind.

How do we see what we see?

eye diagramLight reflects off of objects and enters the eyeball through a transparent layer of tissue at the front of the eye called the cornea. The cornea accepts widely divergent light rays and bends them through the pupil—the dark opening in the center of the colored portion of the eye.

The pupil appears to expand or contract automatically based on the intensity of the light entering the eye. In truth, this action is controlled by the iris—a ring of muscles within the colored portion of the eye that adjusts the pupil opening based on the intensity of light. (So when a pupil appears to expand or contract, it is actually the iris doing its job.)

The adjusted light passes through the lens of the eye. Located behind the pupil, the lens automatically adjusts the path of the light and brings it into sharp focus onto the receiving area at back of the eye—the retina.

An amazing membrane full of photoreceptors (a.k.a. the “rods and cones”), the retina converts the light rays into electrical impulses. These then travel through the optic nerve at the back of the eye to the brain, where an image is finally perceived.

A delicate system, subject to flaws.

It’s easy to see that a slight alteration in any aspect of how the human eye works—the shape of the eyeball, the cornea’s health, lens shape and curvature, retina problems—can cause the eye to produce fuzzy or blurred vision. That is why many people need vision correction. Eyeglasses and contact lenses help the light focus images correctly on the retina and allow people to see clearly.

In effect, a lens is put in front of the eye to make up for any deficiencies in the complex vision process.

The main parts of the human eye include:

  • Cornea: transparent tissue covering the front of the eye that lets light travel through
  • Iris: a ring of muscles in the colored part of the eye that controls the size of the pupil
  • Pupil: an opening in the center of the iris that changes size to control how much light is entering the eye.
  • Sclera: the white part of the eye that is composed of fibrous tissue that protects the inner workings of the eye
  • Lens: located directly behind the pupil, it focuses light rays onto the retina
  • Retina: membrane at the back of the eye that changes light into nerve signals
  • Rods and cones: special cells used by the retina to process light
  • Fovea: a tiny spot in the center of the retina that contains only cone cells. It allows us to see things sharply.
  • Optic Nerve: a bundle of nerve fibers that carries messages from the eyes to the brain
  • Macula: a small and highly sensitive part of the retina responsible for central vision, which allows a person to see shapes, colors, and details clearly and sharply.

 

Special thanks to the EyeGlass Guide, for informational material that aided in the creation of this website. Visit the EyeGlass Guide today!

We hope this finds you all healthy and safe.  We are pleased to announce our re-opening for routine eyecare on Monday May 11, 2020.

As a valued member of our Lake Erie Family Eyecare patient community, we appreciate the trust you place in us and want to inform you about how we are addressing the coronavirus (COVID-19) situation.

Please know that our office is following all recommended guidance from public health authorities, including best practices for hygiene, infection control and medical professional team health. We feel confident in our ability to continue seeing patients and providing primary care according to the tradition of quality care that you have come to expect and deserve.

Our highest priority is to keep all of our patients and staff as safe as possible.

The coronavirus spreads very easily. So, please call us before you come in for an appointment if you have any of these symptoms or risk factors:

 

As a staff we will be wearing masks and request that you do as well for everyone’s safety and to limit the possibility of exposure.  If you do not have a mask, we may be able to provide you with one while our supply lasts.

Please try to complete all necessary paperwork prior to your scheduled apt (can be found on our website..)

We are requesting that only scheduled patients enter the office ( including glasses selection and dispensing/adjustments to help practice social distancing and to keep foot traffic limited as much as possible (if the patient is a minor or requires the assistance of a caregiver, please limit this to one additional person if possible)

For contact lens orders, please call ahead for curbside pickup

We are excited to resume patient care and will continue to closely monitor events in our local community in order to continuously update our policies and protocols as a result of new information.

Thank you for your understanding and please know that we appreciate your trust. We hope you and your family are well and continue to stay healthy & safe during this time.

With kind regards,

Dr. Jennifer Felbinger and the Lake Erie Family Eyecare team.