Prevalence
According to an American study published in Archives of Ophthalmology, nearly 3 in 10 children between the ages of 5 and 17 have astigmatism.[3] A recent Brazilian study found that 34% of the students in one city were astigmatic.[4] Regarding the prevalence in adults, a recent study in Bangladesh found that nearly 1 in 3 (32.4%) of those over the age of 30 had astigmatism.[5]
A recent Polish study revealed that "with-the-rule astigmatism" may lead to the onset of myopia.[6]
A number of studies have found that the prevalence of astigmatism increases with age.[7]
