An observational study in Refractive Error, sponsored by Sun Yat-sen University. Completed at 1 site in China. Per ClinicalTrials.gov, last updated 2016-04-14.
Sponsored by Sun Yat-sen University · Observational
Myopia has emerged as a major health issue in east Asia, because of its increasingly high prevalence in the past few decades (now 80-90% in school-leavers), and because of the sight-threatening pathologies associated with high myopia, which now aff ects 10-20% of those completing secondary schooling in this part of the world. Similar, but less marked, changes are occurring in other parts of the world. The higher prevalence of myopia in east Asian cities seems to be associated with increasing educational pressures, combined with life-style changes, which have reduced the time children spend outside.
Myopia has emerged as a major health issue in east Asia, because of its increasingly high prevalence in the past few decades (now 80-90% in school-leavers), and because of the sight-threatening pathologies associated with high myopia, which now aff ects 10-20% of those completing secondary schooling in this part of the world. Similar, but less marked, changes are occurring in other parts of the world. The higher prevalence of myopia in east Asian cities seems to be associated with increasing educational pressures, combined with life-style changes, which have reduced the time children spend outside.
In this trial, the investigators aim to study the evolutionary model of myopia in China, which could provide new insight into the social development and human adaptation.
427 studies on the registry are indexed under Refractive Errors; 62 are open to participants now.
This study's enrollment of 852,441 is above the median of 150 across 110 observational studies indexed under Refractive Errors.
Browse Refractive Errors studies →Sun Yat-sen University is the lead sponsor of 1,681 studies on the registry; 610 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Subjects from all the province of China who undergoing the examination of Refractive error from 2005 to 2015 year.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Refractive error of both eyes measured by autorefractor and subjective measuring
Time frame: Baseline
This study is completed, as verified in Apr 2016. You cannot join it, but the record below documents what was studied.
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