Myopia, Refractive Errors
Conditions
Keywords
Myopia, Socioeconomics
Brief summary
The high prevalence of myopia has become a global public health problem. The study amied to investigate the prevalence and progression of myopia associated with social environmental factors in Tianjin, a Chinese megacity in north China.
Detailed description
The high prevalence of myopia has become a global public health problem, especially in East and South Asian countries. It's still not clear for the prevalence and progression of myopia associated with social environmental factors. Thus, the investigators will conducted a long-term observational study to the effect of the socioeconomics, medical resources and school-related environmental parameters and others on the prevalence and progression of myopia among Chinese school-aged children and adolescent.
Interventions
None listed
Sponsors
Tianjin Eye Hospital
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
6 Years to 18 Years
Healthy volunteers
Yes
Inclusion criteria
* aged 6 to 18 years * no ocular diseases and systemic diseases * consent to undergo an eye examination
Exclusion criteria
* schoolchildren unwilling to participate
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Prevalence of myopia | up to 3years | Myopia is defined as any eye's SER (sphere + 1/2 cylinder) of at least -0.5 diopters (D). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Changes in prevalence of myopia | up to 3years | Myopia is defined as any eye's SER (sphere + 1/2 cylinder) of at least -0.5 diopters (D). |
| Changes of Spherical equivalent | changes from baseline at 36months | Changes of Spherical equivalent |
Countries
China
Contacts
Primary Contactxiaoyan yang, director
Backup Contactyan wang, director
Outcome results
None listed