The Truth About 20/20 Vision

An eye chart, also known as a Snellen Chart, was invented by Ferdinand Monoyer and named after an ophthalmologist by the name of Herman Snellen. An eye chart's use is to check for visual acuity, and can be found in the offices of optometrists and physicians. By measuring a person's visual acuity, you can check for vision impairments and then properly diagnose and treat. Most people hope to receive the news that they have 20/20 vision which is often believed to be "perfect" vision, but while 20/20 vision is good vision, it is not perfect vision. 20/20 vision means that while standing 20 feet from the eye chart you can read what the average person can. With this being said, some people have vision which is even greater than 20/20, for example, 20/15. In this particular case, 20/15 vision would mean that the patient can see at 20 feet from the chart what the average person would see at just 15 feet from the chart. When is the last time that you had your vision tested by a professional?