Skip to main content

Table 4 Studies of aniso-astigmatism among young children

From: The biometric parameters of aniso-astigmatism and its risk factor in Chinese preschool children: the Nanjing eye study

Author Year Location Age Sample size Definition Prevalence
The Sydney Myopia Study [14] 2006 Sydney, Australia 6 years 1765 ≥ 1.0 DC 1.60%
Dobson et al. [25] 2008 Tohono O’odham, American 4–13 years 1041 ≥ 1.0 DC 15%
The Northern Ireland Childhood Errors of Refraction Study [26] 2013 Northern Ireland, England 6–7 years 661 ≥ 1.0 DC 7.70%
12–13 years 389 5.60%
The Sydney Paediatric Eye Disease Study [28] 2013 Sydney, Australia 6–72 months 2090 ≥ 1.0 DC Overall 3%
European-Caucasian 1.9%
East-Asian 5.2%
South-Asian 3.6%
Middle-Eastern 3.3%
The Multi-Ethnic Pediatric Eye Disease Study [16] 2010 California, America 6–72 months Hispanic American, 3030 ≥ 1.0 DC 5.60%
≥ 0.50 in J0 / J45 10.40%
African American, 2994 ≥ 1.0 DC 4.50%
≥ 0.50 in J0 / J45 11.90%
The Shandong Children Eye Study [15] 2015 Shandong, China 4–18 years 6025 ≥ 1.0 DC 3.70%
Yamashita et al. [27] 1997 Rural area of southwestern Japan 6 years 350 ≥ 1.0 DC 2.6%
7 years 2.3%
8 years 2.0%
9 years 3.4%
10 years 3.7%
11 years 4.3%
\