Vision Disorders - Causes
Most vision disorders are thought to be inherited. That is, the disorders are passed down from one generation to the next. Most babies are born slightly hyperopic. However, this pattern changes as they grow older. In most cases, children develop normal vision. They may, however, become more hyperopic, or they may develop myopia.
Some eyecare specialists argue that vision disorders may be caused by a number of factors. For example, they think that factors in the environment, such as work conditions, stress, and eye strain, can contribute to the development of vision disorders.
The development of astigmatism has been attributed to a number of factors. For example, people with allergies often rub their eyes repeatedly. This constant rubbing may cause damage to the cornea. Diabetes (see diabetes mellitus entry) is also known to change the shape of the cornea over time.