Table 1

Characteristics of the studies included in the meta-analysis

Study (country/region)Year examinedAreaAge rangeNMale/Female ratioResponse rate (%)Grading systemAssessment
SEED (Singapore)2004–2011Urban≥4087160.9875.6M7
The Shaanxi Eye Study (China)2003Rural1–9168150.8780.2V6
The Yangxi Eye Study (China)2014Rural≥5044691.0090.7P6
The Shihpai Eye Study (Taiwan China)1999–2000Urban≥6510581.6466.6A7
CHES (USA)2010–2013Urban≥5045820.5879M6
The Handan Eye Study (China)2006–2007Rural≥3066030.8790.4V6
The Beijing Eye Study (China)2001Urban & Rural≥40431983.4V6
The Hisayama Eye Study (Japan)2005Urban≥4018920.7042.7H5
The Blue Mountain Eye Study (Australia)1992–1994Urban≥4935831.3082.4V8
The Central India Eye and Medical Study (India)2006Rural≥3045610.8680.1P7
The Hisayama Eye Study (Japan)2012Urban≥4028740.7863.8M6
The Hisayama Eye Study (Japan)201729360.7965.7
The Wuxi Eye Study (China)2010Urban≥5061500.7490.7V6
  • A, Avilla’s Grading Method for PM; CHES, the Chinese American Eye Study; H, PM Classification by Hayashi; M, International META-PM Classification; META-PM, meta analyses of pathologic myopia; P, International Photographic Classification and Grading System of Myopic Maculopathy; SEED, the Singapore Epidemiology of Eye Disease; V, PM Classification by Vongphanit.