An observational study in Myopia, sponsored by Zhongshan Ophthalmic Center, Sun Yat-sen University. Status unknown at 2 sites in China. Open to participants aged 3 Years to 12 Years. Per ClinicalTrials.gov, last updated 2022-03-29.
Sponsored by Zhongshan Ophthalmic Center, Sun Yat-sen University · Observational
The study aims to observe the ocular development and refractive error changes among school children and adolescents
This study aims to observe the refractive error changes of school children and adolescents for 3 years, and to collect data of ocular structural parameters, family history and environmental factors so as to understand the natural course and internal laws of myopia progression.
413 studies on the registry are indexed under Refractive Errors; 62 are open to participants now.
This study's enrollment of 7,050 is above the median of 150 across 107 observational studies indexed under Refractive Errors.
Browse Refractive Errors studies →Zhongshan Ophthalmic Center, Sun Yat-sen University is the lead sponsor of 159 studies on the registry; 77 are open to participants now.
Counted across the registry records on this site, refreshed daily.
School children and adolescent at the age of 3(Junior Kindergarten), 6(Grade 1), 9(grade 4), 12(grade 7)
Exclusion Criteria:
spherical equivalent change
SE was measured by autorefractometer with cycloplegic once a year at scheduled time Every 12 months, follow up for 3 years
Time frame: examine every 12 months, follow up for 3 years
Axial length
Axial length is measured by IOMaster once a year at scheduled time
Time frame: examine every 12 months, follow up for 3 years
Anterior chamber depth
Anterior chamber depth is measured by IOMaster once a year at scheduled time
Time frame: examine every 12 months, follow up for 3 years
lens thickness
lens thickness is measured by IOMaster once a year at scheduled time
Time frame: examine every 12 months, follow up for 3 years
Vitreous length
Vitreous length was measured by IOMaster once a year at scheduled time
Time frame: examine every 12 months, follow up for 3 years
Environmental factor
Time of outdoor activities \& short range reading,measured by questionnaire
Time frame: examine every 12 months, follow up for 3 years
This study is status unknown, as verified in Mar 2022. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Zhongshan Ophthalmic Center, Sun Yat-sen University