What is the shortest and longest distance that I can use Acuity Pro?
At an optical distance of 24 feet, the 20/400 ‘E’ will be 8.36 inches tall. Most 15″ monitors have a usable height of about 8 to 8 1/2″ so we would say that the absolute maximum distance would be 24′. If you used a 17″ monitor, that distance would be increased. See the table below to help you decide which monitor is best for your situation. The reason we don’t recommend using the maximum distance possible is because the 20/400 letter looks kind of stupid filling the entire screen. If you are trying to give the impression of a high tech office, don’t go full screen, get a larger monitor. The other reason to use a larger monitor is that when you are trying to show your patient some of the photos, they will look much better (be bigger) on a larger screen. The minimum distance is around 6 feet. Anything shorter than that is going to make the 20/15 and 20/10 lines be so small that they won’t be accurate. Also remember that at optical distances shorter than around 13 feet, there is a 0.25 di
