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.
Farsighted (also called hyperopia) is a term to describe an eye condition that lets you clearly see objects far or distant in your field of vision, while objects that are near appear blurry or hazy. Due to the nature of this type of vision problem, farsightedness can affect vision in different ways.