... (49 .6% )] A total of 5 ,64 8 preschool children aged 6 72 months were recruited from households in South-Western and Western areas of Singapore and 3,009 ( 72. 2% ) children responded 2. 2.3 Sampling method ... (mainly myopia, strabismus and refractive error) in 3,000 Chinese children aged 6 72 months in Singapore The STARS study was conducted from February 20 06 to November 20 08 2. 2 .2 Study area and ... households located in the South-Western (Bukit Batok, Clementi, and Queenstown) and Western (Jurong East and Jurong West) part of Singapore with Chinese children aged 6 72 months formed the sampling...