The embodiments disclosed herein include improved toric lenses and other ophthalmic apparatuses (including, for example, contact lens, intraocular lenses (IOLs), and the like) that includes one or more refractive angularly-varying phase members, each varying depths of focus of the apparatus so as to provide an extended tolerance to misalignments of the apparatus. Each refractive angularly-varying phase member has a center at a first meridian (e.g., the intended correction meridian) that directs light to a first point of focus (e.g., at the retina of the eye). At angular positions nearby to the first meridian, the refractive angularly-varying phase member directs light to points of focus of varying depths and nearby to the first point of focus such that rotational offsets of the multi-zonal lens body from the center of the first meridian directs light from the nearby points of focus to the first point of focus.

Apparatus and methods are described, including a corrective optical film for converting a corrective single-focal lens to a multi-focal lens and/or a progressive lens. A thickness and/or a curvature of the corrective optical film is different in different regions of the corrective optical film, such that the corrective optical film is configured, upon being adhered to the single-focal lens, to change a focal length of the single-focal lens differently in different regions of the single-focal lens. Other applications are also described.

The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.

A method to select or to conceive/design lenses is provided. The method may be applied to lenses having effect of myopia control, visual fatigue relief, etc. In one aspect, a predictive model that ranks myopia control solutions according to visual, behavioral, and biometric parameter is provided. The predictive model may be built based on the myopic eye characteristics, the behavior of the wearers, and the defocus induced by the myopia control solution. In another aspect, a method, a computer-readable medium, and an apparatus for evaluating the efficacy of an ophthalmic lens in controlling at least one sightedness impairment (e.g., myopia) of at least one wearer of the ophthalmic lens are provided. The apparatus may determine, based on a predetermined relationship model, the efficacy of the ophthalmic lens for at least one wearer from representative data corresponding to the at least one wearer.

Provided is a technology that makes a change in the amount of aberration that is a combination of aberration in an eye and aberration in a spectacle lens robust with respect to rotation. Provided are a method for designing a spectacle lens and related technologies in which, when rotational asymmetry of an aberration distribution of an eye of a wearer about an optical axis is strong, a spectacle lens that has an aberration distribution of which rotational asymmetry is weak in a region having a predetermined width and a center at any point on a main meridian of the spectacle lens is obtained as a design solution, and when rotational asymmetry of the aberration distribution of the eye of the wearer about the optical axis is weak, a spectacle lens of which rotational asymmetry is strong in the region is obtained as a design solution.

A technology that makes a change in the amount of aberration in a spectacle lens worn by wearer relative to a change in at least one of the aberration in the eye or spectacle lens. A method for designing a spectacle lens wherein, when a degree of change caused by a physical feature of wearer in at least one of an aberration distribution of an eye of wearer and an aberration distribution of a spectacle lens worn by the wearer is large, a spectacle lens that has an aberration distribution of which rotational asymmetry is weak in a region having a predetermined width and a center at any point on a main meridian of the spectacle lens is obtained as a design solution, and when the degree of the change is small, a spectacle lens of which rotational asymmetry is strong in the region is obtained as a design solution.

A Progressive Lens Simulator comprises an Eye Tracker, for tracking an eye axis direction to determine a gaze distance, an Off-Axis Progressive Lens Simulator, for generating an Off-Axis progressive lens simulation; and an Axial Power-Distance Simulator, for simulating a progressive lens power in the eye axis direction. The Progressive Lens Simulator can alternatively include an Integrated Progressive Lens Simulator, for creating a Comprehensive Progressive Lens Simulation. The Progressive Lens Simulator can be Head-mounted. A Guided Lens Design Exploration System for the Progressive Lens Simulator can include a Progressive Lens Simulator, a Feedback-Control Interface, and a Progressive Lens Design processor, to generate a modified progressive lens simulation for the patient after a guided modification of the progressive lens design. A Deep Learning Method for an Artificial Intelligence Engine can be used for a Progressive Lens Design Processor.

A spectacle lens for a display device which can be placed on the head of a user and generate an image has a front and a rear, an injection section and a deflection section spaced from the injection section, an exit section in the rear and a light-guiding channel which guides light beams of pixels of the generated image, which are injected into the spectacle lens via the injection section, in the spectacle lens to the deflection section, by which they are deflected towards the exit section and then coupled out of the spectacle lens through the exit section. The spectacle lens is in the form of a progressive lens having a distance vision region and a near vision region, and the exit section, as viewed from above onto the rear of the spectacle lens, lies outside the distance vision region and outside the near vision region.

A method for designing a progressive addition lens and the related technology, the lens including a near portion for viewing a near distance, a distance portion for viewing a farther distance, and an intermediate portion between the near and distance portions and having a progressive refraction function, wherein transmission astigmatism is added to the near and intermediate portions out of the distance portion, the near portion, and the intermediate portion, the method including a mode selection step of determining, according to a prescription power, whether to select an AS-oriented mode wherein the amount of transmission astigmatism to be added is set so the amount of horizontal refractive power is larger than the vertical refractive power, or select a PW-oriented mode in which the amount of transmission astigmatism to be added is set so the amount of vertical refractive power is larger than the horizontal refractive power.

A progressive spectacle lens has a front surface, a rear surface, and a spatially varying refractive index. The progressive spectacle lens can have: (a) a refractive index that changes only in a first and second spatial dimension and is constant in a third spatial dimension, and the distribution of the refractive index in the first spatial dimension and the second spatial dimension is neither punctually nor axially symmetric; (b) a refractive index that changes in a first, a second, and third spatial dimension, and the distribution of the refractive index in the first spatial dimension and the second spatial dimension is neither punctually nor axially symmetric on all planes perpendicular to the third spatial dimension; or (c) a refractive index that changes in a first, second, and third spatial dimension, and the distribution of the refractive index is not punctually or axially symmetric at all.