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 occurs when light entering the eye is focused behind the retina instead of directly on it. This is caused by an eye that is too short, whose cornea is not curved enough, or whose lens sits farther back in the eye than normal. Farsightedness often runs in families.