The Incidence and Progression of Myopia: Cohort Study

A Cohort Study on Incidence and Progression of Myopia in a Group of Medical Students

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03244670

Enrollment

350

Registered

2017-08-09

Start date

2017-08-15

Completion date

2019-09-19

Last updated

2019-09-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Myopia

Keywords

Myopia

Brief summary

A cohort study on incidence and progression of myopia in a group of medical students

Detailed description

A prospective cohort study to investigate the refractive error development, progression and their risk factors in young adult population comprises a group of medical students in China for two years

Interventions

OTHERObservation study only, no specific intervention

Observation study only, no specific intervention

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

17 Years to 23 Years

Healthy volunteers

Yes

Inclusion criteria

* Volunteer subject, , willing to follow the protocol and able to read, comprehend and sign the informed consent form, * Age between 17 and 23 years

Exclusion criteria

* Vulnerability of the subject, * Participation in another study which might have an influence on vision or interfere with study assessments, * Aphakic or pseudophakic (intraocular lens) * Participants who are wearing ortho-K lenses, or undergone any kind of myopia control treatments or undergone refractive surgery. * Any current or evolving pathology manifested in the eye or the appendages which might have an influence on vision, or interfere with study assessments (e.g. AMD, glaucoma…), * Any previous ocular surgery which might have an influence on vision or interfere with study assessments (e.g. iridectomy, refractive surgery…), * Any untreated and/or uncontrolled systemic condition which might have an influence on vision, or interfere with study assessments (e.g. uncontrolled diabetes, uncontrolled high blood pressure…), * Any medical treatment or medication which might have an influence on vision or interfere with study assessments (e.g. antidepressants, drugs with atropinic effects…),

Design outcomes

Primary

Measure	Time frame	Description
refraction	Change from baseline for two years	The participants will be measured for their refractive error by optometrist, and observe the rate of progression of myopia

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026