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New research · Ophthalmology
Clinical ophthalmology (Auckland, N.Z.) · 23h
StudyClinical ophthalmology (Auckland, N.Z.) · 2026

Refractive Risk Factors for Amblyopia in Turkish Preschoolers: A School-Based Vision Screening Study of 1126 Children.

Numan Küçük, Sılay Canturk Uğurbaş, Atilla Alpay, Suat Hayri Uğurbaş
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OphthalmologyStudy

All children with 2+ diopters of anisometropia had amblyopia in this screening study.

Refractive Risk Factors for Amblyopia in Turkish Preschoolers: A School-Based Vision Screening Study of 1126 Children.

Numan Küçük … Suat Hayri Uğurbaş
Clinical ophthalmology (Auckland, N.Z.) · 2026
Purpose

To evaluate refractive risk factors for unilateral and bilateral amblyopia.

Methods

125 children who were above the threshold values determined for refractive errors or for whom measurements could not be taken due to patient compliance were referred to us for eye examination.

n = 125 children
Results

screening: every child with this much eye-focus mismatch had lazy eye

11.4%
≤0.5 D anisometropia
25.9%
0.5-1 D
54.5%
1-2 D
100%
≥2 D
More results

Of the 125 referred children 106 were examined comprehensively.

The prevalence of amblyopia was found to be 2.6%.

In regression analysis, presence of <2 D and 2-4 D hyperopia were found to be isolated risk factors for amblyopia (p<0.05).

More results

Astigmatism was a risk factor unilateral and bilateral amblyopia in univariate analysis (p=0.001, p=0.001 respectively).

“
Conclusion · 1 of 2

We found lower than the generally accepted threshold values of hypermetropia, astigmatism and anisometropia to be risk factors for amblyopia. Our data can help shape threshold values and screening policies for refractive errors.

Conclusion · 2 of 2

More population-based studies are needed in different regions of our country in order to make guidelines consisting of optimal threshold values that can be used in amblyopia screening programs.

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