Amblyopia
Conditions
Keywords
Non-cycloplegic photorefraction, cycloplegic refraction,, Amblyopia
Brief summary
Purpose: : This study was performed to compare the accuracy of non-cycloplegic photorefraction with cycloplegic refraction in detection of refractive amblyopia risk factors and determine some corresponding beneficial cut points. Method: In this diagnostic accuracy study, right eyes of 185 children (1 to 14 years) underwent first non-cycloplegic photorefraction (with PlusOptix SO4 photoscreener) and then cycloplegic refraction from October 2009 to August 2010. Based on the cycloplegic refraction results, hyperopia (≥+3.5D), myopia (≥-3D), astigmatism (≥1.5D), and anisometropia (≥1.5D) were set as criteria based on AAPOS guidelines. The difference in detection of refractive amblyopia risk factors between the two methods was the main outcome measure.
Interventions
DEVICEphotorefraction
photorefraction is a name of device.
Sponsors
Shahid Beheshti University of Medical Sciences
Study design
Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
DOUBLE (Caregiver, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
1 Years to 14 Years
Healthy volunteers
No
Inclusion criteria
* \> 1 year old /with consent
Exclusion criteria
* mental retardation * impaired fixation * strabismus * ptosis and any other organic ophthalmic disorder interfering with refraction
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| refraction | 10 months | cycloplegic auto refraction & Non-cycloplegic photorefraction |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| hyperopia (≥+3.5D), myopia (≥-3D), astigmatism (≥1.5D), and anisometropia (≥1.5D) were set as criteria based on AAPOS guidelines. | 10 months | cycloplegic auto refraction & Non-cycloplegic photorefraction |
Countries
Iran
Outcome results
None listed