To see as clearly and comfortably as possible, see an optometrist for a comprehensive eye exam and discuss the best possible vision correction options for your specific needs. If you have an eye examand are told you have 20/20 (or 6/6) vision, does this mean you have perfect eyesight? Mixed number. This is a way of expressing an improper fraction by simplifying it to whole units and a smaller overall fraction. It's an integer (whole number) and a proper fraction. Now that we have our whole number for the mixed fraction, we need to find our new numerator for the fraction part of the mixed number. Step 2: Get the new numerator What is 20/6 as a mixed number?". VisualFractions.com, http://visualfractions.com/calculator/improper-to-mixed/what-is-20-6-as-a-mixed-number/. Accessed 31 October, 2023.

Visual acuity is a static measurement, meaning you are sitting still during the testing and the letters or numbers you are viewing also are stationary. There are a number of ways this can be expressed and the most common ways you'll see 6 to the 20th shown are:

At this testing distance, the size of the letters on one of the smaller lines near the bottom of the eye chart has been standardised to correspond to "normal" visual acuity — this is the "20/20 (6/6)" line. If you can identify the letters on this line but none smaller, you have normal 20/20 (6/6) visual acuity. Now let's go through the steps needed to convert 20/6 to a mixed number. Step 1: Find the whole number To work this out we'll use the whole number we calculated in step one (3) and multiply it by the original denominator (6). The result of that multiplication is then subtracted from the original numerator: In the Snellen visual acuity system, the top number of the Snellen fraction is the viewing distance between the patient and the eye chart. In the United States, this distance typically is 20 feet; in ANZ it is 6 metres (therefore 20/20 is equal to 6/6). Because of the broader nature of the word “vision,” what is commonly called “20/20 (6/6) vision" should really be called "20/20 (6/6) visual acuity" or “20/20 (6/6) eyesight.” What is 20/20 or 6/6?

Although visual acuity testing is very useful to determine the relative clarity of your eyesight in standardised conditions, it isn't predictive of the quality of your vision in all situations. When we talk about exponentiation all we really mean is that we are multiplying a number which we call the base (in this case 6) by itself a certain number of times. The exponent is the number of times to multiply 6 by itself, which in this case is 20 times. 6 to the Power of 20 To answer these questions, let's take a closer look at how optometrist measure the quality of your vision. Visual acuity, eyesight and vision: What's the difference? Visual acuity The term "20/20" (or 6/6 when measured in metres as used in Australia and New Zealand) and similar fractions (such as 20/60 (6/18), 20/40 (6/12) etc.) are visual acuity measurements. They also are called Snellen fractions, named after Herman Snellen, the Dutch ophthalmologist who developed this eyesight measurement system in 1862.We first want to find the whole number, and to do this we divide the numerator by the denominator. Since we are only interested in whole numbers, we ignore any numbers to the right of the decimal point. So basically, you'll either see the exponent using superscript (to make it smaller and slightly above the base number) or you'll use the caret symbol (

The increasingly larger letter sizes on the lines on the Snellen chart above the 20/20 (6/6) line correspond to worse visual acuity measurements (20/30 (6/9); 20/50 (6/12) ; etc.); the lines with smaller letters below the 6/6 line on the chart correspond to visual acuity measurements that are even better than 20/20 vision (e.g. 6/5; 6/3).Your optometrist or an assistant will use an instrument to show you choices of lenses to sharpen your eyesight. Vision is a broader term than visual acuity or eyesight. In addition to clarity of sight or simply a description of the ability to see, the term "vision" all interactions between the eyes and the brain, and all neurological processes that take place in the brain to make the sense of vision possible.