2,300
Participants
Start Date
September 30, 2012
Primary Completion Date
April 1, 2016
Study Completion Date
April 1, 2016
group1
Non-cycloplegic self-refraction +conventional glasses
group2
Cycloplegic subjective refraction by experienced optometrist +conventional glasses
group3
Cycloplegic subjective refraction by Rural Refractionist Program + conventional glasses
group4
Cycloplegic subjective refraction by an experienced optometrist +ready-made glasses
Zhongshan Ophthalmic Center, Guangzhou
Sun Yat-sen University
OTHER