Screening for Hyperopic Reserve in Kindergarten
ConditionMyopia
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
AgeNot listed
SponsorBeijing Tongren Hospital
About this trial
Screening for hyperopic reserve among senior kindergarten children is an important population-based eye health measure. Hyperopic reserve refers to physiological hyperopia in young children, which acts as a natural buffer against myopia development. This screening aims to identify children with insufficient hyperopic reserve at an early stage, providing information for implement targeted myopia prevention interventions, and reduce the risk of subsequent myopia onset and progression.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Senior kindergarten children within the education system of Beijing.
Informed consent signed by parents or guardians.
Children are able to cooperate to complete examinations, with physical and cognitive status permitting.
Disqualifiers
Children whose parents or guardians refuse to sign informed consent.
Children who cannot cooperate with screening examinations due to poor physical or cognitive status.
Trial population
This is a population-based census (not a sampling survey) of senior kindergarten children within Beijing's education system. The candidate roster of 134,000 children was verified and provided by educational authorities before project initiation. Eligible participants are senior kindergarten children whose parents or guardians signed informed consent and who can cooperate with eye examinations. All children meeting inclusion criteria from over 2,200 kindergartens across Beijing are invited to join the study.
Trial design
Design model
Cohort
Time perspective
Prospective
Treatments tested in this trial
Not listed
Trial groups
134,000 Participants
are grouped into 1 trial groupGroup A: Senior kindergarten children, Beijing hyperopic reserve census
Trial outcomes
Primary outcomes
1
Spherical Equivalent Error
Spherical equivalent is calculated from refractive readings acquired via non-cycloplegic autorefraction during on-site kindergarten screening or cycloplegic re-examination (for half children, anticapated).
Time frame
Baseline, 1-month, 6-month, 12-month2
Axial length
Ocular axial length is measured using a NIDEK biometer during on-site kindergarten screening
Time frame
Baseline, 1-month, 6-month, 12-monthSecondary outcomes
1
Uncorrected Distance Visual acuity
Uncorrected distance visual acuity is tested on-site at kindergartens using the self-developed electronic visual acuity chart from Capital Medical University. The chart complies with the Chinese national standard GB Standard Logarithmic Visual Acuity Chart, adopting the 5-mark recording system (e.g., 5.0, 4.8) with a 5-meter testing distance.
Time frame
Baseline, 6-month, 12-monthSponsors and contacts
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Beijing Tongren Hospital
Lead sponsor
Capital Medical University
Collaborator
Source ClinicalTrials.gov