Eyesight is Acuity and Vision
Your eyesight is comprised of the performance of the all the components involved in your visual system. Acuity and vision are two important elements of your total eyesight, and each can have unique issues and challenges.
Acuity is the clearness of your vision and the most common measurement of your eyesight. Acuity is measured by the ability to identify symbols of varied sizes at a specific distance. You’ve probably had many eye exams to test the acuity of your eyes. The acuity of your eyesight is the smallest size that you can clearly identify. For example, an acuity of 20/20 generally means that from 20 feet away you can see as clearly as a person with normal eyesight would see from 20 feet away. An acuity of 20/40 means that from 20 feet away you can see the same as a person with normal eyesight would see from 40 feet away. The maximum acuity of the human eye is generally thought to be around 20/10, which means you can see with more acuity than is thought to be normal.
Vision, on the other hand, refers to a dynamic thought process that creates your comprehension of what you see using your senses to create perception of the world around you. While your acuity will help you read signs clearly at a distance when driving down the road, vision will help you perceive distances between those signs, judge the speed of the car you are passing, merge safely, and notice a pedestrian in the road suddenly.
Each attribute can have specific issues. For example, problems with your eyesight might be an astigmatism where an irregularly shaped cornea or lens makes it difficult for light to focus properly on the retina and vision becomes blurred at any distance. Myopia, or nearsightedness, is another common problem where you cannot see distant objects as clearly as objects that are near. Problems with your vision may include color blindness or amblyopia, where the vision in one eye suffers because the brain and eye are not working properly together.
At EyeCare Specialties, we have specialists that can help you to see your best no matter what element of your eyesight is challenging to you. From Vision Therapy to corrective lenses, we will help you see with your best eyesight possible.
Sources: National Eye Institute (NEI) and American Optometric Association
Protecting Your Vision
Protecting your vision and prioritizing healthy eyes has wide-reaching health benefits that can help you prevent disease and maintain quality eyesight throughout your life. Following these three tips will help you set yourself up for successful eye health in 2018 and beyond.
Schedule an appointment in 2018!
Schedule an appointment to see us for a comprehensive exam in 2018. Many common eye diseases like glaucoma and macular degeneration can only be revealed through regular exams from your eye doctor. Catching these diseases in their early stages is the best way to protect yourself from vision loss. Even if no disease is detected, an eye exam can reveal common vision problems that many people don’t realize can be improved upon or even prevent further loss with glasses or contact lenses.
Use protective eyewear and sunglasses
Protecting your eyes from the sun’s ultraviolet rays or eye injuries is one of best ways to protect your vision. Fortunately, it has never looked so good on you! Come visit our optical gallery and invest in a pair of sunglasses that block out both UV radiation or quality protective eyewear for sports and other activities.
Manage your health
Eat a healthy diet rich in fruits and vegetables, maintain a healthy weight, and quit smoking as soon as possible. These three health tips will not only improve your overall health, but each of them can lower your risk of developing health conditions and diseases that lead to vision loss.
Sources: The National Eye Institute (NEI)
Myopia in the Modern Age
Myopia is the technical term for nearsightedness. It means that things at a distance are not clear and easy to see. Once myopia is discovered during a child’s eye exam, it typically increases in children until about the age of 21.
Between the 1970s and the early 2000s, the incidents of myopia in the US almost doubled to 42%. People are losing their distance vision at an alarming rate, and no one really knows why. The cause is debated amongst researchers who have studied everything from the effects of device use to bright sunlight and how eyes focus on far away objects. While the increase in children’s activities surrounding using devices and looking at books indoors might play a role, many studies have shown that spending time outdoors in early childhood reduces the onset of myopia. Some scientists believe it could be related to exposure to sunlight or the opportunity to allow eyes to focus on objects far away.
While the exact cause may not be clear, we can slow down myopia in children by using contact lenses that slow down the progression of nearsightedness so that the child does not develop as high of a degree of myopia. Not only does this mean that the child’s vision will clearer, but the health risks associated with myopia, such as retinal detachment, glaucoma, and cataracts, can also be slowed down to help the child live their life to the fullest.
For more information on correcting myopia, check out our video with Dr. Todd Pfeil.
Sources: National Eyes Institute, Wired Magazine