NCT07761949

Brief Summary

The primary objective is to determine how streetscape exposure influences children's visual perception and psychological perception. The secondary aim is to identify streetscape elements associated with both visual and psychological perception, thereby providing evidence for environmental interventions in urban planning and public health.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
300

participants targeted

Target at P75+ for all trials

Timeline
15mo left

Started Jul 2026

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress17%
Jul 2026Dec 2027

Study Start

First participant enrolled

July 2, 2026

Completed
Same day until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 2, 2026

Completed
27 days until next milestone

First Submitted

Initial submission to the registry

July 29, 2026

Completed
15 days until next milestone

First Posted

Study publicly available on registry

August 13, 2026

Completed
1.4 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 30, 2027

Expected
Last Updated

August 13, 2026

Status Verified

May 1, 2026

Enrollment Period

Same day

First QC Date

July 29, 2026

Last Update Submit

August 5, 2026

Conditions

Myopia

Keywords

MyopiaEmmetropiaEnvironmental defocusEnvironmental perception

Outcome Measures

Primary Outcomes (1)

  • Environmental defocus

    The eye movement behaviors of the subjects were measured using the HTC VR helmet and the 7XINiwei aSee Studio, and then calculated by combining with the deep learning algorithm.

    First day

Secondary Outcomes (1)

  • Perception evaluation

    First day

Other Outcomes (5)

  • Intensity of physical activity

    First day

  • Axis Length

    First day

  • Refractive demand at fixation

    First day

  • +2 more other outcomes

Study Arms (2)

Myopia group

(1) informed consent obtained; (2) children aged 6-18 years; (3) no contraindications for wearing the eye-tracker (e.g., high astigmatism, head/neck injury); (4) myopia already present in at least one eye (spherical equivalent ≤ -0.50 D).

Other: Virtual simulation of street visual environment exposure

Emmetropia group

(1) informed consent obtained; (2) children aged 6-18 years; (3) no contraindications for wearing the eye-tracker (e.g., high astigmatism, head/neck injury).

Other: Virtual simulation of street visual environment exposure

Interventions

Virtual simulation of street visual environment exposureOTHER

Transforming real street scenes into virtual simulation environments, and recreating the visual exposure of actual street scenes in a laboratory setting through wearing VR headsets.

Emmetropia groupMyopia group

Eligibility Criteria

Age6 Years - 18 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)
Sampling MethodNon-Probability Sample
Study Population

Children aged 6 to 18 suffer from myopia or emmetropia

You may qualify if:

  • \- 1: Myopia group: (1) informed consent obtained; (2) children aged 6-18 years; (3) no contraindications for wearing the eye-tracker (e.g., high astigmatism, head/neck injury); (4) myopia already present in at least one eye (spherical equivalent ≤ -0.50 D).
  • : Emmetropia group: (1) informed consent obtained; (2) children aged 6-18 years; (3) no contraindications for wearing the eye-tracker (e.g., high astigmatism, head/neck injury).

You may not qualify if:

  • \- 1: Myopia group: (1) high myopia in either eye (spherical equivalent ≤ -6.00 D); (2) any ocular pathology other than myopia (strabismus, amblyopia, congenital cataract, juvenile glaucoma, retinal disease, etc.); (3) systemic disorders that may affect vision or visual development (e.g., diabetes); (4) anisometropia \> 1.00 D or astigmatism \> 2.00 D in either eye.
  • : Emmetropia group: (1) myopia or hyperopia in either eye (spherical equivalent ≤ -0.50 D or ≥ +0.50 D); (2) any ocular pathology (strabismus, amblyopia, congenital cataract, juvenile glaucoma, retinal disease, etc.); (3) systemic disorders that may affect vision or visual development (e.g., diabetes); (4) anisometropia \> 1.00 D or astigmatism \> 2.00 D in either eye.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Zhongshan Ophthalmic Center, Sun Yat-sen University

Guangzhou, Guangdong, China

RECRUITING

MeSH Terms

Conditions

Myopia

Condition Hierarchy (Ancestors)

Refractive ErrorsEye Diseases

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
PROSPECTIVE
Target Duration
1 Day
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 29, 2026

First Posted

August 13, 2026

Study Start

July 2, 2026

Primary Completion

July 2, 2026

Study Completion (Estimated)

December 30, 2027

Last Updated

August 13, 2026

Record last verified: 2026-05

Data Sharing

IPD Sharing
Will not share

Locations

CN(1)