|
What is 20/20 vision ? 20/20 is American for 6/6. The first number is the testing distance and in the UK we use 6 metres.
Lets see what its like. A test chart that optometrists use is the best place to start. The line with red is the 6/6 line. Most people should be able to see below this line! Please note that this is very simple and there are many other aspects to seeing well.
|