Skip to main content

Dear Patients,

We are getting ready to reopen the offices for regular patient care on May 15th in Dana Point and May 16th in Irvine. In order to avoid crowding and to stay on top of additional disinfection procedures, appointment slots will be limited. What you can expect:

  1. Face coverings required, non-touch temperature reading, hand washing upon arrival.
  2. Disinfection of touch surfaces in addition to our usual sanitation procedures as well as barrier films on certain high-touch areas.
  3. Digital frame measurement technologies for all spectacle orders to replace face-to-face measurements.
  4. On-site, but non-facing payment options.
  5. Elimination of paper and electronic forms in the office.

We understand delays in care are inconvenient and can lead to poorer health outcomes. With reduced appointment volumes and a 2-month backlog, we will do our best to see all of you while maintaining strict safety precautions. Your cooperation in completing medical questionnaires at home, prior to your visit, is greatly appreciated. We’re all excited to see you soon.

Advanced Eyecare Optometric Center in Irvine and Dana Point, California
Home » What's New » How Do We See?

How Do We See?

Have you ever thought about how vision works? Seeing is an incredible gift made possible by a system in which the eye and the brain process visual information from the outside world. If any step of that process does not function properly, vision will be impaired.

Similar to a camera, the eye transmits light from the world around us into an image that we can perceive. Certain parts of the eye even function like the different parts of a camera such as the shutter, the lens and film (if we can hearken back to the days when we used film in cameras). Here is a quick breakdown of the fascinating way our eyes and brain enable us to see and experience the world around us:

The Vision Process

Light reflected from an object in our field of view is gathered by the cornea which is essentially the clear “window” to our eye. The cornea then refracts the light rays through the pupil (the center of the iris where light enters the eye). The iris, which like the shutter of a camera will enlarge and shrink based on how much light is coming in, then passes the image onto the crystalline lens. Just like a camera lens, the lens in the eye focuses the light rays, projecting them to a point at the back of the eye called the retina, where the image will appear upside down. The retina contains a thin layer of color-sensitive cells called rods and cones that perceive color.

From the retina, the visual signals travel to the brain via the optic nerve. The brain receives information from both eyes and must then converge the images (and flip them right side up) to get a complete picture.

Vision Problems

A breakdown in vision can happen at any point in this process. From the muscles that control the eyes, to the parts within the eye, to the pathway to the brain. Sometimes vision impairment is due to technical problems with the eye receiving the information and passing the signal on, such as convergence insufficiency (inability to coordinate the eyes to converge on one point), myopia (nearsightedness) or cataracts (clouding of the lens).

Other times, the eyes might work perfectly, but there is a problem with the brain interpreting the signals it receives. In these cases we can’t “see” in the traditional sense, because our brains aren’t able to properly “read’ the signals or we don’t know what we are looking at. This is the case for some learning disorders that are caused by the visual processes in the brain such as dyslexia.

As you can see, vision is quite a complicated process. A simple vision exam isn’t always able to determine vision problems, especially in children which is why it is so important to have regular comprehensive eye exams, to measure the health of the eye and all of its parts.

Call Our Offices