(I)The usual way to have your distant vision tested is to stand twenty feet from a chart of different-sized letters. (II) For children or people who cannot read, charts with pictures are usually available. (III) A visual test can also be done with an instrument set up to simulate the same distance. (IV) Similarly, there are ways to test hearing over a distance. (V) Near vision is tested by having people read standard-sized type at a closer distance.