Spectacles for presbyopia treatment and myopia progression control and associated methods

Abstract

A wearable optical device increases a Resolvable Object Distance Range (RODR) thereby reducing focusing demands of a plurality of objects located along a visual angle distance for a user with presbyopia or myopia. The devise includes a negative refractive element and a positive refractive element located along an optical axis. The negative refractive element and the positive refractive element are separated from each other by a separation space and at a separation distance suitable for mounting on a spectacle. A surface of a non-central zone of the negative refractive element or the positive refractive element is a Fresnel surface. The separation space is filled by an intermediate media with a refractive index lower than that of the negative refractive element or the positive refractive element. In one embodiment, the intermediate media is an optical grade resin or polymer. In another embodiment, a spacing seal is located around a periphery of the separation space, and the intermediate media is a low-humidity gas for reducing condensation within the separation space during ambient temperature changes.