Long -term effects of optical defocus on eye growth and refractogenesis.

Introduction: The aim of this paper was to study the effect of binocular and alternating monocular myopic constant defocus prescribed in spectacle format on myopia onset and progression in children.

Material And Methods: 129 children aged 5–12 years were divided into 4 groups: 48 children aged 5–8 years (1st group) with emmetropia and risk factors of myopia development were prescribed the continuous wearing of plus lenses to induce myopia of 1.0 D.