In 1990 and 2010, the proportion of moderate and severe vision impairment due to uncorrected refractive error was 51.1% and 52.9%, respectively, according to Kovin S. Naidoo, OD, PhD, and colleagues.
The review in Optometry and Vision Science encompassed 243 population-based cross-sectional studies and estimated the number of people worldwide with moderate and severe visual impairment or blindness caused by uncorrected refractive error (URE).
A total of 6.8 million people were blind in 2010, and 101.2 million were vision impaired due to URE.
Blindness prevalence in all ages due to URE decreased from 0.2% in 1990 to 0.1% in 2010, a 33% reduction, according to researchers.
The prevalence of moderate and severe vision impairment due to URE decreased from 2.1% in 1990 to 1.5% in 2010, a 25% reduction.
“In 2010, uncorrected refractive error continues as the leading cause of vision impairment and the second leading cause of blindness worldwide, affecting a total of 108 million people to one in 90 persons. The most frequent cause for moderate to severe vision impairment and the second most common cause for blindness was URE,” the researchers concluded. – by Abigail Sutton
Disclosure: The researchers reported no relevant financial disclosures.