Progressive power lens including: object side surface; eyeball side surface; and at least a near portion having a power for near vision, wherein object side surface includes power change in vertical direction of lens having progressive refractive power function, eyeball side surface includes power change in horizontal direction of lens having progressive refractive power function, when surface refractive power in the horizontal direction is defined as DHn and surface refractive power in vertical direction is defined as DVn in near power measurement point N in object side surface, relational expression of DHn<DVn is fulfilled, and near portion of eyeball side surface has a shaped part wherein signs of positive and negative of surface refractive power in vertical direction of lens and surface refractive power in horizontal direction of lens are opposite to each other.

A pair of progressive ophthalmic lenses (1, 2) meets special conditions for improving binocular vision of a wearer, while avoiding discomfort for peripheral vision. A first one of the conditions relates to width values of far vision fields and/or proximate vision fields, for indicating that the fields are different enough in width between both lenses. A second one of the conditions sets a maximum value for the relative difference in mean refractive power gradient between both lenses.

The local refractive power or the refractive power distribution of a spectacle lens is measured. A first image of a scene having a plurality of structure points and a left and/or a right spectacle lens of a frame front is captured with an image capturing device from a first capture position having an imaging beam path for structure points, which extends through the spectacle lens of the frame front. At least two further images of the scene are captured with the image capturing device from different capture positions, one of which can be identical with the first capture position, without the spectacle lenses of the spectacles or without the frame front containing the spectacle lenses having the structure points imaged in the first image, and the coordinates of the structure points in a coordinate system are calculated from the at least two further images of the scene by image analysis.

Method for calculating or optimizing a spectacle lens, including specifying at least one surface for the spectacle lens to be calculated or optimized; determining the course of a main ray through at least one visual point of the at least one surface; determining a first primary set and a second primary set of coefficients of the local aberration of a local wavefront; specifying at least one function which assigns a second secondary set of coefficients to a second primary set of coefficients, said second secondary set of coefficients defining the higher-order aberration of a propagated wavefront; determining a higher-order aberration of a local wavefront propagated starting from the at least one visual point along the main ray depending on at least the second primary set of coefficients on the basis of the specified function; and calculating or optimizing the at least one surface of the spectacle lens based on the determined higher-order aberration of the propagated local wavefront.

A spectacle lens is provided belonging to a series of spectacle lenses having each of first refractive power and second refractive power in common, where a progressive region length, which is a length along a meridian within a progressive region, is shorter than a predetermined reference spectacle lens belonging to the series of spectacle lenses, and a designed maximum differential value where a normalized addition refractive power distribution in the progressive region is differentiated is caused to be close to a reference maximum differential value where a normalized addition refractive power distribution in the progressive region of the reference spectacle lens is differentiated.

A pair of progressive ophthalmic lenses (1, 2) meets special conditions for improving binocular vision of a wearer, while avoiding discomfort for peripheral vision. A first one of the conditions sets a minimum value for the difference between nasal and temporal half-widths of far vision field and/or proximate vision field for at least one of the lens. A second one of the conditions sets a maximum value for the relative difference in mean refractive power gradient between both lenses.

Provided is progressive addition lens without a progressive corridor and capable of eliminating the peripheral unwanted astigmatism on both sides of the central progressive zone of the lens. The three-dimensional freeform surface design of the lens and injection molding method are used to manufacture the progressive addition lens, which can provide a clear distant vision on the upper part thereof, a clear near vision on the lower part thereof, and a clear intermediate vision thereof at the middle progressive zone. The present disclosure has a wide field of view and a high definition that greatly reduces the interference of vision in the astigmatism zone.

The present application discloses optical frame glasses, comprising lens. The lens has a circular central area and a plurality of annular focus-increasing compensation areas surrounding the central area, the center of the circular central area coincides with the optical center of the lens, wherein focal powers of the central area and the plurality of focus-increasing compensation areas progressively increase in a radially outward direction. The optical frame glasses in the present application can eliminate high-order aberrations of eyes, thereby limiting the occurrence and development of myopia. In addition, the optical frame glasses of the present application do not touch the eyeballs, the wearing method is simple, no discomfort is caused after worn, the maintenance method is simple, and the manufacturing cost is low.

An eye-strain reducing lens is characterized by an x-y-z coordinate system, and includes a distance-vision region, having a negative distance-vision optical power, configured to refract a light ray, directed by a source at a distance-vision region point at a distance-vision x-distance from a center of the coordinate system, to propagate to an eye-center-representative location; and a near-vision region, having a near-vision optical power that matches the distance-vision optical power within 0.5 D, configured to refract a light ray, directed by the source at a near-vision region point at a near-vision x-distance from the center of the coordinate system, to propagate to an x-z location of the eye-center representative location at a corresponding y height; wherein the near-vision x-distance is smaller than the distance-vision x-distance.

The local refractive power and/or the refractive power distribution of a left and/or a right spectacle lens in a spectacle frame is measured in the wearing position on the head of a spectacle wearer by capturing at least two images of an eye of the spectacle wearer from different recording positions. The disclosure also relates to a computer program product having a computer program with program code and to an apparatus for carrying out the method.