237
Participants
Start Date
January 31, 2015
Primary Completion Date
June 30, 2017
Study Completion Date
June 30, 2017
the SMS reminder message
the SMS reminder message will sent to the SMS group patients 1 week and 3 day before there appointment,to remind them the exact time and address of the revisit appointment.
Blindness Preventment and Treatment Department, Zhongshan Ophthalmic Center, Guangzhou
Collaborators (1)
Orbis
OTHER
The World Diabetes Foundation
OTHER
Sun Yat-sen University
OTHER