Requirements:

1) you must have either a 15", 17", or 19" monitor

2) you must have flash plugin for it to work (click here to download)

1) have someone measure out the correct length that you should sit back at

2) keep a ¼" black border around your screen monitor by using the monitor buttons

3) try not to squint

4) when you can no longer read more than half the words on a line, press stop

1) do not consider this as an official exam, only an optometrist has the most precise instruments to find your true Rx

2) this exam is only meant to give you an idea of where your eye power lands

3) due to variations in every monitor, accuracy is not perfect (dot pitch, brightness/contrast, monitor size, screen size, screen resolution)