The goal of this diagnostic test is to compare the results of refraction and amblyopia risks between using 2WIN-S portable refractor and cycloplegic refraction in pre-school age. All participants will be tested by 2WIN-S portable refractor.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
SCREENING
Masking
NONE
Enrollment
250
All participants will be tested by 2WIN-S portable refractor without eye dilatation. If the 2WIN-S reports non-referral, participant will be tested visual acuity by optometrist. If the 2WIN-S reports referral, participant will be tested cycloplegic refraction by pediatric ophthalmologist, then tested by 2WIN-S again. The participant whose result is abnormal will be referred to the hospital for further management.
Rajavithi Hospital
Bangkok, Bangkok, Thailand
Significant refractive errors defined by AAPOS
Measuring spherical equivalent(SE) and cylinder(Cy), and axis to detect specific target levels of ARFs and visually significant refractive errors, as defined by AAPOS.
Time frame: At baseline.
Diagnostic accuracy for Amblyopia
Diagnostic accuracy for Amblyopia, measuring by 2WIN-S device and pediatric ophthalmologist.
Time frame: At baseline.
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