Abstract:AIM: To study the impact of wearing single-vision spectacle lenses(SVLs)on the refractive errors at the periphery of the retina in myopic children.
METHODS: It was a self-control study. Totally 48 children aged 10 to 15 years old were involved. Cycloplegic autorefraction from right eyes was measured using Grand Seiko WAM5500 infrared refractometer and the value was at 0° at the retinal central fovea, at 10°, 20°, and 30° in the temporal and nasal visual fields. Measurements were taken on each subject both while uncorrected and while wearing SVLs.
RESULTS: The mean spherical equivalent refraction of myopia children was -3.99±1.22D. Relative peripheral hyperopia defocus was found in horizontal visual field and increased with the increase of eccentricity. Relative peripheral hyperopic defocus increased when wearing spectacle correction, comparing with the uncorrected state(P<0.05). There was no statistical significance for J180 and J45 when compared wearing spectacle and uncorrected state.
CONCLUSION: Relative peripheral hyperopic defocus increased when wearing spectacle correction, comparing with the uncorrected state in myopia children. To improve the design of the lens based on the focus state of the peripheral retina may become the new ideas of myopia correction.
