Posted on Friday, November 23, 2012 at 2:50 pm CST
Seeing clearly, in itself, is no small feat. As light is reflected by objects near and far, it enters the eye through the cornea. It is then focused through the pupil as tiny muscles in the iris contract and relax, opening and closing in response. The lens, just behind the pupil, changes shape with the help of small muscles in the ciliary body to focus the light onto the retina at the back of the eye. Millions of photoreceptive nerve cells within the retina send light energy in the form of electric impulses through the optic nerve to the brain. Light sensitive cone cells, in the center portion of the retina called the macula, specialize in color and detail seen in bright light. Low light, peripheral vision cells, called rods, surround the macula, acting as motion sensors in dim conditions. This is the miracle of eyesight.
Source: Dr. Davis
Posted on Friday, November 23, 2012 at 2:45 pm CST
Many who spend the day behind a computer screen find their eyesight compromised in a number of ways, in addition to just feeling exhausted after eight hours of sitting and staring. Our eyes were designed to move and adjust, focusing near to far and side to side, during all kinds of natural light conditions, not to be steadily focused all day, every day, on a backlit electronic screen.
Source: Dr. Davis
Posted on Friday, November 23, 2012 at 2:42 pm CST
For most, the process is automatic, sending rapid-fire synapses to the brain in electronic messages, delivering and processing images, then prompting a response.
Source: Dr. Davis
Posted on Friday, November 23, 2012 at 2:35 pm CST
There is more to the disorder than just flipped letter images, however. In addition, dyslexic individuals may find it is difficult to:
Source: Dr. Davis
Posted on Friday, November 23, 2012 at 2:31 pm CST
That broad horizon, along with the parallax view allowed by the placement of our eyes on the sides of our heads facing forward, provides accurate focus and depth perception when everything is working in sync.
Source: Dr. Davis
Posted on Friday, November 23, 2012 at 2:22 pm CST
It is estimated that modern humans in developed countries spend an average of five hours each day viewing a computer screen. From work and communication to entertainment, and from mobile devices to desktops, laptops and notebooks, we stay connected. And sit. And slouch. And squint. You get the picture.
Source: Dr. Davis
Posted on Thursday, October 11, 2012 at 9:45 am CDT
Lazy eye is the state of diminished eyesight in one of a child’s eyes. Medically, the term used is amblyopia in order to distinguish it from strabismus, which is the state of one eye having a physical turn. In strabismus, a visual inspection can determine that the two eyes are not focusing on the same location in many cases. While the term “lazy eye” is often used to describe this phenomenon by the general public, however, it is actually inaccurate.
Source: Dr. Davis
Posted on Thursday, October 11, 2012 at 8:57 am CDT
You finally decided to get a thorough vision exam for yourself or your child, in order to address the vision-related issues you have noticed. There are many questions that you might be asking yourself: Will treatment work? Will the vision therapy expert be able to determine a proper course of action for you or your child? Maybe you’re confident in your vision therapy provider. However, there is one question which still nags in the back of your mind: Will my insurance cover this?
Source: Dr. Davis
Posted on Thursday, October 11, 2012 at 8:16 am CDT
As schools across the country are reopening their doors after a summer of vacation, many students are already thinking about the fall interscholastic sports season. Whether their interest is in football, soccer, cross country, or volleyball, chances are good that tryouts have already occurred, and many of them may have even spent their summer practicing for the season. Particularly in varsity sports where the competition is fierce for spots on the team, many students pour themselves into the sport of their choice to make the team. However, there are also many students who will avoid sports entirely, feeling as though they are not athletic enough or are too clumsy to make a positive impact on the school’s team. While there are many causes for a student to be a less-than-stellar athlete, did you know that vision disorders can be among those causes?
Source: Dr. Davis
Posted on Thursday, September 06, 2012 at 1:36 pm CDT
Lazy eye is the state of diminished eyesight in one of a child’s eyes. Medically, the term used is amblyopia in order to distinguish it from strabismus, which is the state of one eye having a physical turn. In strabismus, a visual inspection can determine that the two eyes are not focusing on the same location in many cases. While the term “lazy eye” is often used to describe this phenomenon by the general public, however, it is actually inaccurate.
Source: Dr. Davis