SPECTACLES AND ASSOCIATED METHODS FOR PRESBYOPIA TREATMENT AND MYOPIA PROGRESSION CONTROL

摘要

A negative refractive element facing an object and a positive refractive element facing a patient eye, the negative refractive element having a central zone with strong negative refractive power, and the positive refractive element has a central zone with a less strong positive refractive power. The front focal points do not have to overlap. The negative refractive element and the positive refractive element are axially separated by a small distance such that the combination of the two refractive elements is made into a wearable spectacle. For myopia progression control, at least one portion of the paracentral and/or peripheral zone has a relative add power with respect to that of the central zone such that the image of an off-axis distant or intermediate object is formed in front of a corresponding paracentral or peripheral retina area to create myopic defocus on the corresponding retina area.