Blindness has many causes, and depending on the severity of the condition, a person can be totally blind, or still retain partial sight. All of these conditions are known as ‘visual impairment’ and are different to common sight related problems such as short or long sightedness. Eye sight naturally deteriorates over time (known as macular degeneration) but there are other conditions, such as cataracts and glaucoma, that can appear at any time and are still the leading cause of blindness in developing countries. Whilst some conditions are treatable with drugs and surgical procedures, others are sadly permanent, and those sufferers must learn to adjust to a life with reduced or no vision. In these circumstances, lifestyle changes must be made, including adaption to the home and work environment, but many blind people continue to lead rich and fulfilling lives despite their impairment.
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