Myopia
Conditions
Keywords
Myopia Prevalence, Proportion of Purchase of free Spectacles, Proportion of Purchase of update Spectacles, Proportion of Wearing Spectacles
Brief summary
The aim of the project is to create, study and advocate for a model that can be adopted by the Chinese government to provide spectacles for all children sustainable.
Detailed description
Uncorrected refractive error (URE) is the leading cause of visual impairment among Chinese children, accounting for 90% or more of poor vision, and Chinese children have among the highest rates of myopia in the world. Despite the fact that the problem of URE is safely and inexpensively treated with glasses, only 15-40% of children needing them own and wear glasses sufficient to provide good vision in rural China. PRICE (Potentiating Rural Investment in Children's Eyecare) will use a randomized, controlled design across 4 groups of all 138 schools in Yunnan (one of China's poorest provinces) and Guangdong (one of the richest) to optimize the model of free glasses for all with an optional upgrade. The selection of free spectacles and cost of the upgrade options will be varied between groups in order to find the optimal balance between high rates of purchase of upgrade glasses on the one hand and good acceptance and wear of free spectacles among those selecting them on the other.
Interventions
OTHERFree Glasses
Provide free glasses
OTHERUpgrade Glasses 1
Provide optional purchase from range of spectacles, cheapest RMB100 (Mean price paid for glasses by Control families in Seeing is Learning I, subtracting one SD)
OTHERUpgrade Glasses 2
Provide optional purchase from range of spectacles, cheapest RMB200 (Mean price paid for glasses by Control families in Seeing is Learning I, adding one SD)
Sponsors
Orbis
United States Agency for International Development (USAID)
The Fred Hollows Foundation
Rural Education Action Project
Second People's Hospital of Yunnan Province
Sun Yat-sen University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
7 Years to 12 Years
Healthy volunteers
No
Inclusion criteria
1. Randomly selected primary schools, which has all 3, 4 and 5 grades, in the 9 project counties. 2. A class randomly selected from each grade of 3, 4, and 5 grades of the selected primary schools. 3. All children in the selected classes.
Exclusion criteria
1. Those schools that the total number of students are more than 2000. 2. Those schools that the total number of students of 3, 4, 5 grades are less than 80. 3. Children suffering from eye diseases such as cataract, congenital ptosis, strabismus, congenital glaucoma will not be included in the study and will be recommended referral.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Glasses purchase proportion | 8 months after the start of the project. | Proportion of children in each group requiring glasses whose families select to purchase them. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Wearing spectacles proportion | 8 months after the start of the project. | Proportion of children who actually wearing glasses at an unannounced check at endline survey. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Visual acuity | At the first week of the study, two months later, and six months later. | There are three times of vision acuity(VA) check. The baseline VA, the fraction VA and the endline VA with and without glasses |
| Mydriatic refraction results | One month after visual screening. | Those uncorrected VA ≤ 6/12 in either eye and 25% of the students whose uncorrected VA \> 6/12 in both eyes will receive mydriatic refraction. |
| Family economic conditions | At the first week of the study | Collect the children's family economic information on baseline survey. |
Countries
China
Outcome results
None listed