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How the Eyes Work

Vector image of an eyeball.

Every morning, we open our eyes and become immersed in a wealth of visual information. The eyes and related brain structures are a complex system that allows us to experience visual information from the surrounding world. It is easy to take clear vision for granted, but even subtle changes in the structure or functioning of the eyes can disrupt our sight. An eye care provider conducts a thorough eye exam to ensure that these components are functioning together well.

Basic Eye Anatomy

The eyeball is not a single, spherical structure as is commonly thought. It consists of a smaller, curved portion called the cornea that attaches to a larger, roughly spherical structure called the sclera (the white of the eye). The eyeball is filled with a jelly-like substance called the vitreous fluid.

Toward the front of the eye are three essential structures: the iris, pupil, and lens. The iris is the colored part of your eye. It can open and close to determine how much light to let in through the pupil, the black hole in the center of your eye. Finally, the lens is a flexible, convex structure that changes shape to direct light rays in different directions within the eye.

At the back of the eyeball is a layer of tissue called the retina. The retina consists of millions of photosensitive cells that react to certain types of light. Cone cells are clustered toward the center of the retina, and react to colors and details in bright light. Rod cells, which are spread toward the periphery of the retina, react to dim lighting conditions.

How the Eyes Facilitate Vision

When light enters the eye through the pupil, it passes through the lens, which changes shape to ensure that the light rays hit the retina. When the light rays reach the back of the eye, it stimulates the rod and cone cells to fire. Cone cells detect fine details and color in the center of your visual field. Rod cells detect edges in peripheral vision and allow us to perceive shapes in dim light.

The rods and cones in your retina convert light energy into electrical signals, which exit the eye through the optic nerve, located just below the center of the retina. The optic nerve carries visual information to the occipital cortex in the very back of your brain, where it is processed to result in a rich visual experience.

If any part of this complex arrangement functions improperly, vision is impaired. Thus, it is essential to receive regular optometry exams to have your eye structures and visual abilities checked.

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Office Hours

Monday:

9:00 am-6:00 pm

Tuesday:

9:00 am-6:00 pm

Wednesday:

9:00 am-6:00 pm

Thursday:

9:00 am-6:00 pm

Friday:

8:00 am-4:30 pm

Saturday:

Closed

Sunday:

Closed

  • "Wonderful experience! From the moment I walked in, I felt at ease and comfortable. The staff is welcoming, friendly, and personable. I would highly recommend Dr. Huser and her team."
    Kelly R.
  • "I'm always greeted well as soon as I walk in. The wait time is nonexistent, besides there's coffee or water to enjoy before going in (if there is a wait). Plenty of time to check out new frames & of course the glass bowl of Hershey kisses awaits you.Dr.Huser is honest and really cares. I don't ever feel like just another number. The staff all work as a team and you can tell they all love their job. Makes me want to work there."
    Maria E.
  • "Met Dr. Tekell for my annual appointment. She is very personable and professional. So easy to talk to. It was a very good appointment. So glad to see that although Dr. Jackman is not physically here anymore, his staff is continuing his great practice! Sure do miss him!"
    Ruby A.
  • "I have always had a wonderful experience at this location with all of their personnel and with the doctors. I have complete confidence in the accuracy of the exam. The excellent help of the staff ensures that the fit of the frames and of the way the lens sit in the frames is perfect. My previous frames were made with expert precision and durability, and have lasted for the past 4 years with no problems. They were built to last and that is hard to find in this day and age. If I could give a perfect 10 rating, I would."
    Kelly C.
  • "My 1st visit was in 2016 with Dr. Huser. She was terrific: engaged, knowledgeable, excellent communication skills. I later recommended her to my husband, and was even more pleased with the outcome. She diagnosed the source of his chronic eye irritation — relieving us of the fear that it might be a permanent result of surgery he’d had elsewhere — and offered some simple interventions which have actually worked. Saw Dr. Tekell recently when Dr. Huser was out of the office and was similarly impressed. This is a quality practice and they’ve assembled a great team — excellent optometrists, supported by friendly and helpful staff, and opticians who know their stuff, too."
    Kathleen G.
  • "Beautiful, well organized and impeccably functioning office. Extremely friendly and knowledgeable staff. Outstanding doctor with great care. Overall a wonderful experience, thank you!"
    Casey S.
  • "I absolutely LOVED the selection of glasses onsite!!! All the latest trends from conservative to super funky and fun! The staff is all very friendly and Dr. Huser's was fabulous! It's so wonderful to have a place like this accessible to Tricare/Military insurance holders."
    Brittney G.
  • "Best eye exam i have ever had. Period. Dr. Huser is AWESOME!"
    Jason M.
  • "Absolutely had the best experience! Jan is a star in my eyes filled with kindness and professionalism. The entire crew was super nice and accommodating to my 86 year old mom and me. I will never go anywhere else to get an eye test, or to get glasses. Thank you for making our day and for going above and beyond my wildest expectations."
    Zahra R.