Blindness, the most severe form of visual impairment, can reduce the ability to do everyday tasks. Most diseases and conditions that cause visual impairment and blindness can be prevented or treated with known interventions.
The following facts highlight the number of blindness and impaired vision throughout the world.
“In 2010 there were around 285 million people who had visual impairments and 39 million of them had blindness”.
“It is estimated that there are 120 million people who experience visual impairment caused by uncorrected refractive abnormalities, nearsightedness, farsightedness, or astigmatism. Most of them can achieve normal vision by giving glasses , contact lens or refractive surgery “.
“90% of people who are visually impaired are in the territory of low and middle income countries”.
“About 51% of blindness (19.7 million people) is caused by cataracts due to the aging process, and 43% of visual impairments are caused by uncorrected refractive abnormalities”.
“Cataract surgery and correction of refractive abnormalities are the most effective health interventions”.
“Blindness and visual impairment associated with aging increase in number, along with an increase in life expectancy. This is very much associated with increased blindness in uncontrolled diabetics”.
“Globally, 80% of blindness and impaired vision in adults can be prevented and treated”.
“Blindness due to infection has been greatly reduced by interventions involving effective and innovative partnerships”.
“Approximately 1.4 million children in the world experience blindness. The main causes of blindness in children include cataracts, retinopathy of prematurity, and vitamin A deficiency. Half of that amount can be prevented and treated “.
“For decades the World Health Organization, WHO, has been working hard to eliminate the causes of blindness that can be prevented and treated by providing technical assistance, monitoring and coordination”.