If you’ve ever had an eye exam, you probably heard the term 20/20 vision as something to strive for. But what does 20/20 vision really mean? Today, Nova Vision Center breaks it down for you:
What Is the Snellen Chart?
Dr. Herman Snellen, a Dutch eye specialist, came up with a standardized method of measuring visual acuity. This method involves the use of a chart you see in many eye clinics today, easily recognized by the big letter E at the top.
Below the giant E, each succeeding line on the Snellen chart is 25% smaller than the one above it. Patients are asked to read from the chart, and based on their ability are assigned a fraction that represents their visual acuity. 20/20 vision refers to “normal” vision from a distance of 20 feet.
Does 20/20 Mean Perfect Vision?
Not necessarily. 20/20 vision is a measurement of visual acuity, but there are other things to consider when it comes to your eyesight. These include your eye coordination, depth perception and color vision. Your ability to see things from the side and your eyes’ capacity to focus also matter when evaluating your overall vision. Those with visual acuity problems may be prescribed corrective eyeglasses or contact lenses.
Want to know if you have 20/20 vision? Call us at (703) 291-0080 or complete our form to schedule an appointment. We serve Arlington, Falls Church and the surrounding VA communities.