Is Non-cycloplegic Photorefraction Applicable for Screening Refractive Risk Factors of Amblyopia?
- Conditions
- Amblyopia
- Interventions
- Device: photorefraction
- Registration Number
- NCT01308307
- Lead Sponsor
- Shahid Beheshti University of Medical Sciences
- 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.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 185
- > 1 year old /with consent
- mental retardation
- impaired fixation
- strabismus
- ptosis and any other organic ophthalmic disorder interfering with refraction
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Arm && Interventions
Group Intervention Description one arm photorefraction -
- Primary Outcome Measures
Name Time Method refraction 10 months cycloplegic auto refraction \& Non-cycloplegic photorefraction
- Secondary Outcome Measures
Name Time Method 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
Trial Locations
- Locations (1)
Labbafinejad medical center
🇮🇷Tehran, Iran, Islamic Republic of