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. 1  The inability to focus on nearby objects because the light from the object didn't refract enough and the eye focuses the image behind the retina. 2  A convex lens is used to bend light inwards so that the image focuses right at the retina.