If the character encoding for a web page is chosen appropriately, then HTML character references are usually only required for markup delimiting characters as mentioned above, and for a few special characters (or none at all if a native Unicode encoding like UTF-8 is used).
Far-sightedness, also known as long-sightedness and hyperopia, is a condition of the eye in which light is focused behind, instead of on, the retina. This causes close objects to be blurry, while far objects may appear normal. As the condition worsens, objects at all distances may be blurred.
Farsightedness is a focusing problem usually resulting from an eye that is too short in relation to its focusing parts. Because of the reduced length, the muscles adjusting the lens may fatigue, or the lens may not be able to respond enough to focus the light rays. The retina thus receives a blurred image of light.