For those experiencing the effects of diminishing eyesight, driving can easily become one of the most difficult elements of everyday life. This can be especially trying for those dealing with central vision loss, or a blind area in their central vision.
Vision researchers in Boston have recently published the results of a new study that utilized the safe and controlled environment of driving simulators to evaluate how those suffering from central vision loss are able to rapidly recognize and detect pedestrians entering their field of vision.
While those suffering from central vision loss are able to drive as long as their vision meets the restricted license requirements, those requirements do not take into consideration either the size or location of a blind spot.
An initial study performed in 2013 showed that drivers who had blind areas on the sides that they typically look had a tendency to miss pedestrians coming into the road from that side. This most recent study however, showed that drivers with blind areas above or below their center of interest (the place where they are looking) still have the likelihood of missing, or having a delayed response to, pedestrians coming from the side of the road.
Essentially the two tests determine that anyone suffering from central vision loss in both eyes could potentially have difficulty seeing or reacting quickly to hazards entering their field of vision.
Central vision loss most commonly occurs to those suffering from age-related macular degeneration (AMD). Macular degeneration is the leading cause of vision loss in adults, especially those over the age of 50.
Age-Related Macular Degeneration
The macula is the small, detail-sensitive part of the retina which is utilized for things like reading, recognizing faces, and driving. The remainder of the retina is known as the peripheral retina and is used for peripheral vision and for identifying general shapes.
Common symptoms of age-related macular degeneration are blurriness, dark areas or distortion in one’s central vision, or in advanced cases, the loss of central vision altogether. Basically the ability to see the outline of an object but the inability to make out the details.
These tests performed by Boston researchers showed that the most delayed reactions occurred because drivers noticed pedestrians in their peripheral vision but once the driver turned to look at them directly, the pedestrians were either partially or entirely obscured by the driver’s blind spot.
Anyone currently experiencing degrees of macular degeneration should be aware of the severity of their symptoms in order to understand their driving limitations.
However, that does not mean all is lost. While there is currently no cure for macular degeneration, there are steps that everyone, regardless of age, can take to prevent or diminish its onset or further development.
Risk Factors to Be Aware of Regarding Age-Related Macular Degeneration
Studies are inconclusive as to just what exactly causes macular degeneration, however some risk factors that have been defined are age, family history of AMD, race, gender or the existence of AMD in one eye.
Macular degeneration most commonly occurs in individuals over 50 years of age and is especially common amongst those with a familial history of AMD. Caucasians and females are also at a higher risk of AMD though it is found among men as well as members of other races.
It is also important to know that the presence of AMD in one eye substantially raises the risk of it occurring in the other.
While those elements are beyond an individual’s control, other lifestyle factors exist which can be managed or altered in order to prevent or delay the onset of age-related macular degeneration.
For example, smoking increases the risk of AMD, especially for those that are already genetically at risk. Quitting smoking is a great first step in decreasing the risk of AMD as smoking causes damage that can contribute to the development and progression of the disease.
Poor diet and extreme obesity are other manageable factors in reducing the risk of AMD. Eating a diet high in fruit and vegetables is important for general health, as well as eye-health improvements.
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Steps to Take
If you detect symptoms of age-related macular degeneration, such as blurry distance and/or reading vision, the need for increasingly bright light to see up close, difficulty in recognizing people’s faces or a blank or blurry spot in your central vision, your first step should be to seek out a proper diagnosis from an eye doctor.
Though there is no current cure, there are further steps you can take on your own to increase your eye health and slow or prevent the development or progression of symptoms of AMD. Along with quitting smoking and implementing a nutrient-rich diet, practicing some form of physical exercise daily, such as walking or cycling, can improve both your overall and your eye-specific health.
The American Optometric Association says that vitamin C, when consumed along with vitamins A, E and zinc has the potential of decreasing the risk of AMD by as much as 25 percent. Changing your diet to increase your intake of these vital nutrients has the potential to dramatically improve your eye health and thereby greatly decrease your risk of macular degeneration.
In addition, you can see a full list of the 17 vitamins, minerals and herbs that have been shown to support and improve overall vision and eye health.
Because age-related macular degeneration is the most common cause of vision loss, it is vital that everyone is aware of the nature of the disease and the symptoms it involves – especially those approaching or above 50 years of age.
As the studies above have shown, AMD can have a dramatic impact on one’s driving ability and so understanding your difficulties and limitations is an important first step in ensuring everyone’s safety. With that awareness, establishing and maintaining proper eye health and nutrition is a key way to immediately begin preventing or slowing the development or progression of age-related macular degeneration.
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