Myopia
Conditions
Keywords
Myopia, Focus groups, refraction, Glasses, spectacles
Brief summary
Phase I: Focus groups on different designs of adjustable glasses and standard glasses (August-September 2012) Phase II: Two-month randomized trial comparing four groups: (September 2012 - August 2013)
Detailed description
Phase I: Focus groups on different designs of adjustable glasses and standard glasses (August-September 2012) Phase II: Two-month randomized trial comparing four groups: self-refraction with adjustable glasses, receiving custom standard glasses; subjective refraction by an expert refractionist after cycloplegic automated refraction and receiving custom standard glasses; subjective refraction by a rural refractionist after cycloplegic automated refraction, receiving custom standard glasses; and subjective refraction by an expert refractionist after cycloplegic automated refraction receiving ready made glasses (September 2012 - August 2013)
Interventions
PROCEDUREgroup1
Non-cycloplegic self-refraction +conventional glasses
PROCEDUREgroup2
Cycloplegic subjective refraction by experienced optometrist +conventional glasses
PROCEDUREgroup3
Cycloplegic subjective refraction by Rural Refractionist Program + conventional glasses
PROCEDUREgroup4
Cycloplegic subjective refraction by an experienced optometrist +ready-made glasses
Sponsors
Sun Yat-sen University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
12 Years to 17 Years
Healthy volunteers
No
Inclusion criteria
phase1: - aged 12-17 years * with \<= -1.00D of myopic refractive error in each eye phase2: - 12-15 years old children from two locations in Guangdong Province * with uncorrected vision \</= 6/12 in at least one eye thought to be due to refractive error (that is, correctable to at least 6/7.5 with cycloplegic subjective refraction by an optometrist)
Exclusion criteria
* those corrected VA can not up to 6/7.5 with cycloplegic subjective refraction by an optometrist * those with significant strabismus or vision abnormality (keratopathy, cataract, vitreous macular diseases ), or with vision deficiency ( amblyopia ) children are to be excluded. * Children developing acquired vision problems other than myopia
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Visual acuity with and without study refractive correction | 2 months |
Secondary
| Measure | Time frame |
|---|---|
| Self-reported and Supplemental visual functioning | 2 months |
| frequency of glasses-wear and the reason why the frequency is low | 2 months |
| Accuracy of spectacles given to children | 2 months |
| Value attached to the glasses and satisfaction to the glasses | 2 months |
Other
| Measure | Time frame |
|---|---|
| Breakage, damage and loss of spectacles | 2 months |
Countries
China
Outcome results
None listed