Corrective eyewear lens, method of manufacturing same, and method and device for instructing such manufacture

Abstract

Described are various embodiments of a corrective eyewear lens, method of manufacturing same, and method and device for instructing such manufacture. In one example, a corrective eyewear lens, comprises an optical medium having a common corrective optical refraction area defined therein for addressing a given user eye refraction deficiency. The common corrective optical refraction area comprises at least two distinct corrective optical refraction zones defined by distinct optical refraction parameters to invoke respective optical refraction corrections optically deviated from one another while commonly addressing a same given user eye refraction deficiency.

Description

CORRECTIVE EYEWEAR LENS. METHOD OF MANUFACTURING SAME. AND METHOD AND DEVICE FOR INSTRUCTING SUCH MANUFACTURECROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority from U.S. Provisional Application No. 63 / 697,376 filed September 20, 2024, the entire content of which is hereby incorporated herein by reference.FIELD OF THE DISCLOSURE

[0002] The present disclosure relates to corrective eyewear, and, in particular, to a corrective eyewear lens, method of manufacturing same, and method and device for instructing such manufacture.BACKGROUND

[0003] Individuals routinely wear corrective lenses to accommodate for reduced vision acuity, be it in consuming printed or rendered content up close (e.g. book, smartphone, tablet, computer screen, product labels, etc.), in observing near to distant images in day-to- day activities (e.g. walking, driving, shopping, attending a concert or play, etc.), in interacting with other people, or the like. Common conditions that impact vision acuity typically involve some form of deficiency in the eye’s ability to properly refract inbound light to form a clear focused image on the retina.

[0004] These deficiencies may include, for example, spherical aberrations common in nearsightedness (myopia, where light focuses on a point in front of the retina, making it hard to see distant objects), or farsightedness (hyperopia or presbyopia, where light focuses on a point behind the retina when trying to focus on text and objects that are near). Corrective eyewear that can move the image focus backward or forward to properly intersect the retina are quite common.

[0005] Cylindrical aberrations, or astigmatism, are also common, in which the eye improperly applies a cylindrical component to focused images. In these cases, a cylindrical1016P-049-W001 1correction is typically required, which combines both an axis (angle) and cylindrical power component to be prescribed in forming a corrective lens.

[0006] Naturally, many individuals suffer from a combination of different refraction deficiencies, which previously required individuals to carry different prescription glasses with them, for example one for everyday activities, and one for reading. Now, multifocal or progressive lenses can be manufactured, for example, in which a lens is typically manufactured to define two or three focal areas, namely one area for each refraction deficiency (near vs. distance). Progressive lenses also exist in which one area blends progressively into the other through an intermediate area.

[0007] Most recently, computational algorithms have been developed to control, for example, a diamond tip lathe in forming both the front and rear surface of a lens to best accommodate the user’s eye refraction deficiencies, leading to a more precise and comfortable vision correction across distinct lens areas.

[0008] In Figure 1, various aspects common to bifocal or progressive lenses for corrective eyewear are illustrated. For example, in the illustrated eyewear 100, a bifocal lens 102A is illustratively depicted to include a refractive correction area 104A defined by a prescription or refractive correction parameter to improve vision of distant objects, whereas a distinct refractive correction area 106A is defined by a different prescription or refractive correction parameter to improve vision of nearby objects (e.g. reading portion). Each refraction correction area is thus provided to address a respective refraction deficiency of the user’s eye, as defined, for example, during a subjective refraction test using a standard phoropter or the like. In the progressive lens 102B, respective distance 104B and near 106B vision correction areas are separated by a progressive “intermediate” area, commonly referred to as a progressive corridor 108B, in which a refractive adjustment is progressively applied to provide midrange correction and improve general user comfort as they move from one corrective area to another. In some lens designs, blending areas are also defined in peripheral regions of the lens that contain non-prescribed cylinder power, for example, and that provide only minimal visual utility. Ultimately, each principal refractive correction area is configured to address a given refractive deficiency of the user’s eye based on a prescribed refraction correction for this deficiency.1016P-049-W001 2

[0009] This background information is provided to reveal information believed by the applicant to be of possible relevance. No admission is necessarily intended, nor should be construed, that any of the preceding information constitutes prior art.SUMMARY

[0010] The following presents a simplified summary of the general inventive concept(s) described herein to provide a basic understanding of some aspects of the disclosure. This summary is not an extensive overview of the disclosure. It is not intended to restrict key or critical elements of the embodiments of the disclosure or to delineate their scope beyond that which is explicitly or implicitly described by the following description and claims.

[0011] A need exists for a corrective eyewear lens, method of manufacturing same, and method and device for instructing such manufacture, that overcome some of the drawbacks of known techniques, or at least, provide a useful alternative thereto.

[0012] In accordance with one aspect, there is provided a corrective eyewear lens, comprising;_an optical medium having a common corrective optical refraction area defined therein for addressing a given user eye refraction deficiency; wherein said common corrective optical refraction area comprises at least two distinct corrective optical refraction zones defined by distinct optical refraction parameters to invoke respective optical refraction corrections optically deviated from one another while commonly addressing a same said given user eye refraction deficiency.

[0013] In one embodiment, the given user eye refraction deficiency comprises user nearsightedness, and wherein each of said distinct optical refraction parameters optically correct for said user nearsightedness.

[0014] In one embodiment, the given user eye refraction deficiency comprises user farsightedness, and wherein each of said distinct optical refraction parameters optically correct for said user farsightedness.

[0015] In one embodiment, the distinct optical refraction parameters are within 0.5 diopters of one another.1016P-049-W001 3

[0016] In one embodiment, the distinct optical refraction parameters are within 0.25 diopters of one another.

[0017] In one embodiment, the distinct optical refraction parameters correspond to respective finetuning adjustments relative to a selected corrective optical refraction prescription.

[0018] In one embodiment, the said at least two distinct corrective optical refraction zones comprise four distinct corrective optical refraction zones.

[0019] In one embodiment, the distinct optical refraction parameters comprise distinct cylindrical correction parameters.

[0020] In one embodiment, the distinct cylindrical correction parameters comprise at least one of distinct corrective cylindrical axis values or distinct corrective cylindrical power values.

[0021] In one embodiment, the optical medium comprises two or more distinct common corrective optical refraction areas for addressing distinct user eye refraction deficiencies; wherein each of said distinct common corrective optical refraction areas comprises at least two said distinct corrective optical refraction zones for commonly addressing a same respective one of said distinct user eye refraction deficiencies.

[0022] In one embodiment, each of said at least two said distinct corrective optical refraction zones for a first of said distinct common corrective optical refraction areas commonly address a user’s nearsightedness, whereas each of said at least two said distinct corrective optical refraction zones for a second of said distinct common corrective optical refraction areas commonly address a user’s farsightedness.

[0023] In accordance with another aspect, there is provided a method for instructing manufacture of a corrective eyewear lens for a given user eye refraction deficiency, comprising: digitally rendering juxtaposed digital content via a light field refraction device to be concurrently viewed at an output of said light field refraction device, wherein visual perception of each said juxtaposed digital content at said output is at least partially governed by the given user eye refraction deficiency and a respective distinct optical1016P-049-W001 4refraction correction applied to each said juxtaposed digital content by the light field refraction device; adjusting at least one said respective distinct optical refraction correction until said visual perception of at least two said juxtaposed digital content, having distinct corresponding optical refraction corrections, is subjectively equivalent; instructing manufacture of the corrective eyewear lens to define a common corrective optical refraction area having distinctly juxtaposed corrective optical refraction zones defined by said distinct corresponding optical refraction corrections to invoke respective optical refraction compensations optically deviated from one another while commonly addressing the given user eye refraction deficiency.

[0024] In one embodiment, the method further comprises, prior to said instructing, digitally simulating user perception through the corrective eyewear lens by rendering simulation content via said light field refraction device while optically simulating said distinctly juxtaposed corrective optical refraction zones via corresponding light field adjustments.

[0025] In one embodiment, the method further comprises manufacturing the corrective eyewear lens according to said instructing.

[0026] In one embodiment, the juxtaposed digital content comprises juxtaposed optotypes each subject to said respective distinct optical refraction correction.

[0027] In one embodiment, the juxtaposed optotypes comprise identical optotypes.

[0028] In one embodiment, the juxtaposed optotypes comprise distinct optotypes.

[0029] In one embodiment, the juxtaposed optotypes comprise 4 juxtaposed optotypes rendered in respective quadrants each according to said respective distinct optical refraction correction, and wherein said adjusting is repeated until visual perception of at least two of said juxtaposed optotypes, having distinct corresponding optical refraction corrections, is subjectively equivalent.

[0030] In one embodiment, the user eye refraction deficiency comprises a spherical aberration, and wherein said distinct corresponding optical refraction corrections comprise distinct spherical corrections for addressing a same said spherical aberration.1016P-049-W001 5

[0031] In one embodiment, the user eye refraction deficiency comprises a cylindrical aberration, and wherein said distinct corresponding optical refraction corrections comprise distinct cylindrical corrections for addressing a same said cylindrical aberration.

[0032] In one embodiment, the user eye refraction deficiency comprises nearsightedness, and wherein said distinct corresponding optical refraction corrections comprise distinct spherical corrections for addressing said nearsightedness.

[0033] In one embodiment, the user eye refraction deficiency comprises farsightedness, and wherein said distinct corresponding optical refraction corrections comprise distinct spherical corrections for addressing said farsightedness.

[0034] In one embodiment, the method for instructing manufacture of a corrective eyewear lens for jointly addressing distinct user eye refraction deficiencies; wherein said digitally rendering and adjusting are repeated for each of the distinct user eye refraction deficiencies so to define a respective set of distinct corresponding optical refraction corrections for each one thereof; and wherein said instructing comprises instructing manufacture of the corrective eyewear lens to define a respective common corrective optical refraction area for each of the user eye refraction deficiencies such that each said respective common corrective optical refraction area has a respective set of distinctly juxtaposed corrective optical refraction zones defined by said respective set of distinct corresponding optical refraction corrections corresponding thereto.

[0035] In accordance with another aspect, there is provided a method for manufacturing a corrective eyewear lens, comprising: forming, within an optical medium, a common corrective optical refraction area for addressing a given user eye refraction deficiency; within said common corrective optical refraction area, forming at least two distinct corrective optical refraction zones defined by distinct optical refraction parameters to invoke respective optical refraction corrections optically deviated from one another while commonly addressing a same said given user eye refraction deficiency.

[0036] In one embodiment, the given user eye refraction deficiency comprises user nearsightedness, and wherein each of said distinct optical refraction parameters optically correct for said user nearsightedness.1016P-049-W001 6

[0037] In one embodiment, the given user eye refraction deficiency comprises user farsightedness, and wherein each of said distinct optical refraction parameters optically correct for said user farsightedness.

[0038] In one embodiment, the distinct optical refraction parameters are within 0.5 diopters of one another.

[0039] In one embodiment, the distinct optical refraction parameters are within 0.25 diopters of one another.

[0040] In one embodiment, the distinct optical refraction parameters correspond to respective finetuning adjustments relative to a selected corrective optical refraction prescription.

[0041] In one embodiment, the at least two distinct corrective optical refraction zones comprise four distinct corrective optical refraction zones.

[0042] In one embodiment, the distinct optical refraction parameters comprise distinct cylindrical correction parameters.

[0043] In one embodiment, the distinct cylindrical correction parameters comprise at least one of distinct corrective cylindrical axis values or distinct corrective cylindrical power values.

[0044] In one embodiment, the method further comprises: forming a distinct common corrective optical refraction area for addressing a distinct user eye refraction deficiency; and within said distinct common corrective optical refraction area, forming at least two further distinct corrective optical refraction zones for commonly addressing said distinct user eye refraction deficiency.

[0045] In one embodiment, the distinct optical refraction parameters are within 0.15 diopters of one another.

[0046] In one embodiment, a selected optical refraction parameter for a further corrective optical refraction zone within said common area is identical to one of said1016P-049-W001 7distinct optical refraction parameters of one of said at least two distinct corrective optical refraction zones.

[0047] Other aspects, features and / or advantages will become more apparent upon reading of the following non-restrictive description of specific embodiments thereof, given by way of example only with reference to the accompanying drawings.BRIEF DESCRIPTION OF THE FIGURES

[0048] Several embodiments of the present disclosure will be provided, by way of examples only, with reference to the appended drawings, wherein:

[0049] Figure 1 is a diagram illustrating various common aspects of corrective eyewear lenses in the prior art.

[0050] Figure 2 is a diagram illustrating a corrective eyewear lens having a common corrective optical refraction area defined therein for addressing a given user eye refraction deficiency, the common corrective optical refraction area comprising at least two distinct corrective optical refraction zones to invoke respective optical refraction corrections optically deviated from one another while commonly addressing the same given user eye refraction deficiency, in accordance with another embodiment;

[0051] Figure 3 is a diagram illustrating a corrective eyewear lens having a common corrective optical refraction area defined therein for addressing a given user eye refraction deficiency, the common corrective optical refraction area comprising at least two distinct corrective optical refraction zones to invoke respective optical refraction corrections optically deviated from one another while commonly addressing the same given user eye refraction deficiency, in accordance with another embodiment;

[0052] Figure 4 is a diagram illustrating a corrective eyewear lens having three distinct common corrective optical refraction areas defined therein for addressing respective given refraction deficiencies, wherein each common corrective optical refraction area comprises at least two distinct corrective optical refraction zones to invoke respective optical refraction corrections optically deviated from one another while commonly addressing the same given refraction deficiency, in accordance with another embodiment;1016P-049-W001 8

[0053] Figure 5 is a diagram illustrating a corrective eyewear lens having a common corrective optical refraction area comprising at least two distinct corrective optical refraction zones, as in Figure 1, collocated with a global corrective optical refraction area; in accordance with another embodiment;

[0054] Figure 6 is a diagram illustrating a corrective eyewear lens having a common corrective optical refraction area comprising a series of concentrically distinct corrective optical refraction zones to invoke respective optical refraction corrections optically deviated from one another while commonly addressing a same given user eye refraction deficiency, in accordance with another embodiment;

[0055] Figures 7A and 7B are schematic diagrams of an exemplary light field vision testing or previewing system, in accordance with one embodiment;

[0056] Figures 8 A, 8B and 8C are perspective views of exemplary light field refractors / phoropters, showing a casing thereof in cross-section (A and B) and a unit combining side-by-side two of the units (C) shown in 8A and 8B, in accordance with one embodiment;

[0057] Figure 9 is a process flow diagram of an exemplary dynamic subjective vision testing method, in accordance with one embodiment;

[0058] Figure 10 is a schematic diagram of an exemplary light field image showing two columns of optotypes at different dioptric power, in accordance with one embodiment;

[0059] Figures 11 A and 1 IB are schematic diagrams illustrating an example of a side- by-side subjective visual acuity test, in accordance with one embodiment.

[0060] Elements in the several figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be emphasized relative to other elements for facilitating understanding of the various presently disclosed embodiments. Also, common, but well-understood elements that are useful or necessary in commercially feasible embodiments are often not depicted in order to facilitate a less obstructed view of these various embodiments of the present disclosure.1016P-049-W001 9DETAILED DESCRIPTION

[0061] Various implementations and aspects of the specification will be described with reference to details discussed below. The following description and drawings are illustrative of the specification and are not to be construed as limiting the specification. Numerous specific details are described to provide a thorough understanding of various implementations of the present specification. However, in certain instances, well-known or conventional details are not described in order to provide a concise discussion of implementations of the present specification.

[0062] Various apparatuses and processes will be described below to provide examples of implementations of the system disclosed herein. No implementation described below limits any claimed implementation and any claimed implementations may cover processes or apparatuses that differ from those described below. The claimed implementations are not limited to apparatuses or processes having all of the features of any one apparatus or process described below or to features common to multiple or all of the apparatuses or processes described below. It is possible that an apparatus or process described below is not an implementation of any claimed subject matter.

[0063] Furthermore, numerous specific details are set forth in order to provide a thorough understanding of the implementations described herein. However, it will be understood by those skilled in the relevant arts that the implementations described herein may be practiced without these specific details. In other instances, well-known methods, procedures and components have not been described in detail so as not to obscure the implementations described herein.

[0064] In this specification, elements may be described as “configured to” perform one or more functions or “configured for” such functions. In general, an element that is configured to perform or configured for performing a function is enabled to perform the function, or is suitable for performing the function, or is adapted to perform the function, or is operable to perform the function, or is otherwise capable of performing the function.1016P-049-W001 10

[0065] It is understood that for the purpose of this specification, language of “at least one of X, Y, and Z” and “one or more of X, Y and Z” may be construed as X only, Y only, Z only, or any combination of two or more items X, Y, and Z (e.g., XYZ, XY, YZ, ZZ, and the like). Similar logic may be applied for two or more items in any occurrence of “at least one ...” and “one or more...” language.

[0066] The systems and methods described herein provide, in accordance with different embodiments, different examples of a corrective eyewear lens in which multiple distinct diffractive correction zones can be defined within a same general diffraction correction to address a same given ocular diffraction deficiency, such as farsightedness, nearsightedness, or the like. For example, a particular diffraction correction area formed to address a particular deficiency such as farsightedness, which typically would have been formed in accordance with a singular corrective optical prescription, is, in accordance with some embodiments, customized to include two or more diffraction correction zones therein based on distinct optical refraction parameters (prescriptions) to invoke respective optical refraction corrections optically deviated from one another while commonly addressing a same given user eye refraction deficiency.

[0067] In some implementations, this may be of particular use where a user’s particular vision deficiency is well suited for a singular prescription, or again may vary dynamically based on different lighting or vision conditions, applications, situations, or the like. Ultimately, using conventional subjective refractive testing techniques, a “best fit” prescription is subjectively identified, and a corrective lens prescribed accordingly. However, using techniques as described herein, for example within the context of a subjective light field refractor that can be operated to concurrently evaluate multiple refractive corrections side-by-side, two or more distinct prescriptions may be purposely selected to address a same refractive deficiency, for example, so to produce a multifocal lens having two or more corresponding refractive correction zones within a same refraction correction area to address, via slightly deviated optical corrections, a same deficiency. Indeed, a subjective light field refractor, or phoropter, such as that described in Applicant’s previous U.S. Patent Nos. 10,761,604; 11,287,883; 11,823,598, for example, the entire content of each of which is hereby incorporated herein by reference, can be used not only to concurrently evaluate multiple corrective prescription parameters, but also simulate1016P-049-W001 11vision through the same device as to how such multiple corrective prescriptions, when juxtaposed as multiple refractive corrections zones in a selected configuration within a same refractive correction area, may be observed in a freeform lens produced accordingly. Accordingly, using, for example, the LFR-260 refractor with QuadView™ technology from Optokare™ (httpsJ / w^^^a quad-prescription can be output to instruct manufacture of a corresponding lens that benefits from a larger spectrum of refractive corrections that, in combination, can provide the wearer with greater comfort, flexibility and / or adaptability.

[0068] Figure 2 provides an example of corrective eyewear 200 comprising a corrective lens 202 that has a common corrective optical refraction area 204 defined therein for addressing a given user eye refraction deficiency (e.g. nearsightedness, farsightedness, etc.). As illustrated in this example, the common corrective optical refraction area 204 comprises at least two (e.g. four) distinct corrective optical refraction zones (204A, 204B, 204C, 204D) to each generally invoke a respective optical refraction correction optically deviated from one another while commonly addressing the same given user eye refraction deficiency for this area 204. In this example, the quad zones are centered in the lens 202 with room above, below and peripherally to incorporate other refractive corrections as may be desired to address other refractive deficiencies, for example. It is further noted that the four zones are illustrated in quadrants, in this example, which may correspond with the QuadView™ representation provided by the light field refractor, or again, in some other configuration. Indeed, optically distinct corrective refraction zones may be juxtaposed side-by-side, in a vertical or horizontal line, in quadrants or in a 2x2 or larger grid pattern (e.g. 2x3, 3x3), or in other configurations as may be practical and beneficial for the viewer. Likewise, while a given common area may include two or more distinctly corrective zones, it may also or alternatively include two or more zones invoking a same correction, i.e. defined by a same corrective prescription. For example, a same prescription may be applied to lateral zones in a 3x1 zone pattern, whereas a distinct correction is applied to the central zone, all ultimately to address a same refractive deficiency. Other arrangements and permutations may also apply.

[0069] In Figure 3, a similar solution is provided for corrective eyewear 300 and corrective lens 302 in which a common corrective optical refraction area 304 that1016P-049-W001 12encompasses a full operational area of the lens 302 is again designed to encompass at least two (e.g. four) distinct corrective optical refraction zones (304A, 304B, 304C, 304D). Again, each of these zones will generally invoke a respective optical refraction correction optically deviated from one another while commonly addressing the same given user eye refraction deficiency for this area 304. In this example, the quad zones more or less encompass the entire usable are of the lens 302, which may be of particular utility for specialized or single purpose glasses, for example, such as reading glasses or general farsightedness glasses.

[0070] In other examples, this solution can be extended to multiple refractive deficiencies, namely to expand the scope of correction for each of multiple common refractive areas. For example, a first common refractive area may be adapted to address farsightedness and have two or more distinct refractive correction zones therein, each defined by a respective prescription to invoke a respective optical refraction correction optically deviated from one another while commonly addressing a same deficiency, namely, farsightedness. A second common refractive area could be adapted to address near sightedness, or midrange vision correction, with another set of two or more refractive correction zones, and so on.

[0071] Again, a subjective light field refractor as noted above may be configured to concurrently evaluate each prescription zone within a same prescription area so to facilitate selection of a multifocal prescription for each area to address each respective deficiency. These respective sets of prescriptions can then be used to simulate a user vision experience through these multi-zone corrective areas (jointly or respectively) and / or to instruct manufacture of a corresponding lens.

[0072] Figure 4 provides an example of eyewear 400 having a complex multifocal lens 202 defined by three distinct common corrective optical refraction areas 404, 408 and 406 for addressing respective given refraction deficiencies (e.g. farsightedness, midrange vision and nearsightedness). In this example, each common corrective optical refraction area comprises at least two distinct corrective optical refraction zones to invoke respective optical refraction corrections optically deviated from one another while commonly addressing the same given refraction deficiency. Namely, farsighted area 404 is comprised1016P-049-W001 13of two distinct farsighted zones 404A and 404B, midrange vision area 408 is comprised of four distinct midrange zones 408A, 408B and 408C, whereas nearsighted area 406 is comprised of three nearsighted zones 406A, 406B and 406C. Each respective group of corrective zones compensates for a same respective refraction deficiency, while the combination of the three respective areas provides for greater overall corrective flexibility and diversity.

[0073] In Figure 5, yet another example is provided in which corrective eyewear 500 comprises a multifocal lens 502 having a common corrective optical refraction area 504 comprising at least two (four) distinct corrective optical refraction zones (504A, 504B, 504C, 504D), as in Figure 1, collocated with a global corrective optical refraction area 512.

[0074] In Figure 6, yet another example is provided in which corrective eyewear 600 comprises a corrective lens 602 having a common corrective optical refraction area 604 defined by a series of concentrically distinct corrective optical refraction zones (604A, 604B, 604C, 604D) to again invoke respective optical refraction corrections optically deviated from one another while commonly addressing a same given user eye refraction deficiency.

[0075] As noted above, different testing and / or previewing methods may be executed using a light field refractor, for example, as can such tests and / or previews be used to instruct manufacture of a corresponding corrective lens. Indeed, an output from the device may be automatically or selectively relayed to a lens forming service provider or in-house device so to instruct the manufacture of the corresponding lens (e.g. via freeform lens lathing techniques or the like). Accordingly, light field solutions as referenced herein can provide for the evaluation, simulation and / or previewing of variable refractive corrections or accommodations that combine distinct corrective measures that can be translated into the physical design and manufacture of multiple dioptric power zones within one or more corrective lens areas in producing more versatile corrective eyewear.

[0076] For example, light field devices and methods as referenced herein can subjectively evaluate a user’s perception of one or more input images (or input image portions, such as respective optotypes), where each image or image portion is virtually located or perceived to be at a distinct image plane / depth location, to be adjusted or altered1016P-049-W001 14using the described light field display technology in response to subjective user feedback, and thus allowing for corrective assessment and / or previewing capabilities in respect of this viewer’s reduced visual acuity or aberrations.

[0077] Generally, light field devices as considered herein will comprise a set of image rendering pixels and a corresponding set of light field shaping elements that at least partially govern a light field emanated thereby to produce a perceptively adjusted version of the input image, notably distinct perceptively adjusted portions of an input image or input scene, which may include distinct portions of a same image, distinct images (portions) associated with different image depths, effects and / or locations and assembled into a combined visual input. For simplicity, the following will generally consider distinctly addressed portions or segments as distinct portions of an input image, whether that input image comprises a singular image having distinctly characterized portions, a digital assembly of distinctly characterized images, overlays, backgrounds, foregrounds or the like, or any other such digital image combinations.

[0078] In some examples, light field shaping elements may take the form of a light field shaping layer or like array of optical elements to be disposed relative to the display pixels in at least partially governing the emanated light field. Such light field shaping layer elements may take the form of a microlens, or other like arrays of optical elements, or again take the form of an underlying light field shaping layer, such as an underlying array of optical gratings or like optical elements operable to produce a directional pixelated output.

[0079] Within the context of a light field shaping layer, it can be disposed at a pre-set distance from the pixelated display so to controllably shape or influence a light field emanating therefrom. For instance, each light field shaping layer can be defined by an array of optical elements centered over a corresponding subset of the display’s pixel array to optically influence a light field emanating therefrom and thereby govern a projection thereof from the display medium toward the user, for instance, providing some control over how each pixel or pixel group will be viewed by the viewer’s eye(s). Arrayed optical elements may include, but are not limited to, lenslets, microlenses or other such diffractive optical elements that together form, for example, a lenslet array.1016P-049-W001 15

[0080] In operation, the light field device will also generally invoke a hardware processor operable on image pixel (or subpixel) data for an image to be displayed to output corrected or adjusted image pixel data to be rendered as a function of a stored characteristic of the light field shaping elements and / or layer (e.g. layer distance from display screen, distance between optical elements (pitch), absolute relative location of each pixel or subpixel to a corresponding optical element, properties of the optical elements (size, diffractive and / or refractive properties, etc.), or other such properties, and a selected vision correction or adjustment parameter related to the user’s reduced visual acuity or intended viewing experience. While light field display characteristics will generally remain static for a given implementation (i.e. a given shaping element and / or layer will be used and set for each device irrespective of the user), image processing can, in some embodiments, be dynamically adjusted as a function of the user’s visual acuity or intended application so to actively adjust a distance of a virtual image plane, or perceived image on the user’s retinal plane given a quantified user eye focus or like optical aberration(s), induced upon rendering the corrected / adjusted image pixel data via the static optical layer and / or elements, for example, or otherwise actively adjust image processing parameters as may be considered, for example, when implementing a viewer-adaptive pre- filtering algorithm or like approach (e.g. compressive light field optimization), so to at least in part govern an image perceived by the user’s eye(s) given pixel or subpixel-specific light visible thereby through the layer.

[0081] With reference to Figures 7A and 7B, and in accordance with different embodiments, an exemplary subjective vision testing device / system (interchangeably referred to as a corrective vision previewing device / system), generally referred to using the numeral 100, will now be described. At the heart of this system is a light field vision testing device such as a light field refractor or phoropter device 702. Generally, light field refractor 702 is a device comprising, as mentioned above, a light field display 704 and which is operable to display or generate one or more images, including optotypes, to a user or patient having his / her vision acuity (e.g. refractive error) tested.

[0082] In some embodiments, as illustrated in Figure 7B, light field display 704 comprises a light field shaping layer (LFSL) 708 overlaid or placed in front of a digital pixel display 710 (i.e. LCD, LED, OLED, etc.). For the sake of illustration, the following embodiments will be described within the context of a LFSL 708 defined, at least in part,1016P-049-W001 16by a lenslet array comprising an array of microlenses (also interchangeably referred to herein as lenslets) that are each disposed at a distance from a corresponding subset of image rendering pixels in an underlying digital display. It will be appreciated that while a light field shaping layer may be manufactured and disposed as a digital screen overlay, other integrated concepts may also be considered, for example, where light field shaping elements are integrally formed or manufactured within a digital screen’s integral components such as a textured or masked glass plate, beam-shaping light sources (e.g. directional light sources and / or backlit integrated optical grating array) or like component.

[0083] Accordingly, each lenslet will predictively shape light emanating from these pixel subsets to at least partially govern light rays being projected toward the user by the display device. As noted above, other light field shaping layers may also be considered herein without departing from the general scope and nature of the present disclosure, whereby light field shaping will be understood by the person of ordinary skill in the art to reference measures by which light, that would otherwise emanate indiscriminately (i.e. isotropically) from each pixel group, is deliberately controlled to define predictable light rays that can be traced between the user and the device’s pixels through the shaping layer.

[0084] For greater clarity, a light field is generally defined as a vector function that describes the amount of light flowing in every direction through every point in space. In other words, anything that produces or reflects light has an associated light field. The embodiments described herein produce light fields from an object that are not “natural” vector functions one would expect to observe from that object. This gives it the ability to emulate the “natural” light fields of objects that do not physically exist, such as a virtual display located far behind the light field display.

[0085] With continued reference to Figure 7A, as producing a light field with angular resolution sufficient for accommodation correction over the full viewing ‘zone’ of a display would generally require an astronomically high pixel density, instead, a correct light field can be produced, in some embodiments, only at or around the location of the user’s pupil(s). To do so, where a location or position of the user’s eye is not otherwise rigidly constrained (e.g. within the context of a subject eye testing device or the like) the light field display can be paired with pupil tracking technology, as will be discussed below, to track a location of1016P-049-W001 17the user’ s eyes / pupils relative to the display. The display can then compensate for the user’ s eye location and produce the correct virtual image, for example, in real-time. Thus, in some embodiments, light field refractor 702 may include, integrated therein or interfacing therewith, a pupil / eye tracking system 710 to improve or enhance corrective image rendering by tracking a location of the user’s eye(s) / pupil(s) (e.g. both or one, e.g. dominant, eye(s)) and adjusting light field corrections accordingly one or more eye / pupil tracking light sources, such as one or more infrared (IR) or near-IR (NIR) light source(s) to accommodate operation in limited ambient light conditions, leverage retinal retroreflections, invoke corneal reflection, and / or other such considerations. For instance, different IR / NIR pupil tracking techniques may employ one or more (e.g. arrayed) directed or broad illumination light sources to stimulate retinal retro-reflection and / or corneal reflection in identifying a tracking a pupil location. Other techniques may employ ambient or IR / NIR light-based machine vision and facial recognition techniques to otherwise locate and track the user’s eye(s) / pupil(s). To do so, one or more corresponding (e.g. visible, IR / NIR) cameras may be deployed to capture eye / pupil tracking signals that can be processed, using various image / sensor data processing techniques, to map a 3D location of the user’s eye(s) / pupil(s). As mentioned above, in some embodiments, such eye / pupil tracking hardware / software may be integral to device 702, for instance, operating in concert with integrated components such as one or more front facing camera(s), onboard IR / NIR light source(s) (not shown) and the like. In other user environments, such as in a vehicular environment, eye / pupil tracking hardware may be further distributed within the environment, such as dash, console, ceiling, windshield, mirror or similarly-mounted camera(s), light sources, etc.

[0086] Light field refractor 702 may also comprise, according to different embodiments and as will be further discussed below, one or more refractive optical components 712, a processing unit 714, a data storage unit or internal memory 716, one or more cameras 718, a power source 720, a network interface 722 for communicating via network to a remote database or server 724.

[0087] In some embodiments, power source 720 may comprise, for example, a rechargeable Li-ion battery or similar. In some embodiments, it may comprise an additional external power source, such as, for example, a USB-C external power supply. It may also1016P-049-W001 18comprise a visual indicator (screen or display) for communicating the device’s power status, for example whether the device is on / off or recharging.

[0088] In some embodiments, internal memory 716 may be any form of electronic storage, including a disk drive, optical drive, read-only memory, random-access memory, or flash memory, to name a few examples. In some embodiments, a library of chart patterns (Snellen charts, prescribed optotypes, forms, patterns, or other) may be located in internal memory 116 and / or retrievable from remote server 724 via network interface 722.

[0089] In some embodiments, one or more optical components 712 may be used in combination with the light field display 704, for example to shorten the size of refractor 702 and still offer an acceptable range in dioptric power. For example, by using a multiplicity of refractive optical components 712 or by alternating sequentially between different refractive components 712 of increasing or decreasing dioptric power, it is possible to shift the center of the light field diopter range to any required value, and thus the image quality may be kept above a desired threshold. The skilled technician will understand that different examples of refractive components 712 may be include, without limitation, one or more lenses, sometimes arranged in order of increasing dioptric power in one or more reels of lenses similar to what is typically found in traditional refractors / phoropters; an electrically controlled fluid lens; active Fresnel lens; and / or Spatial Light Modulators (SLM). In some embodiments, additional motors and / or actuators (not shown) may be used to operate refractive components 712. The motors / actuators may be communicatively linked to processing unit 714 and power source 120, and operate seamlessly with light field display 702 to provide the required dioptric power.

[0090] For example, Figures 8 A and 8B show a perspective view of an exemplary light field phoropter 702 wherein the refractive component 712 is an electrically tunable liquid lens. Thus, in this particular embodiment, no mechanical or moving component are used, which may result in the device being more robust. In some embodiments, the electrically tunable lens may have a range of ±13 diopters.

[0091] Going back to Figure 7A, in some embodiments, eye-tracker 710 may further comprise a digital camera, in which case it may be used to further acquire images of the user’s eye to provide further diagnostics, such as pupillary reflexes and responses during1016P-049-W001 19testing for example. In other embodiments, one or more additional cameras 718 may be used to acquire these images instead. In some embodiments, light field refractor 702 may comprise built-in stereoscopic tracking cameras.

[0092] In one example, a particular set of refractive prescriptions may be compiled and optimized not only by subjective feedback from the viewer as they are exposed to the various possible corrections (e.g. in a side-by-side manner), but also as a function of an observed or measured ocular response to these different corrections. For example, the oculomotor response of the eye as it navigates between on consumes the different corrective powers spatially distributed on the light field display may give further indications on eye or oculomotor health, user habits, weaknesses, or other such behaviours that may ultimately guide the selection of a multifocal single purpose prescription and manufacture of a corresponding lens. Such eye tracking during multifocal exposure is a unique feature of the herein referenced light field refractor solutions, which can provide invaluable information in the customized design and manufacture of a freeform lens.

[0093] In some embodiments, feedback and / or control of the vision test being administered by system 700 may be given via a control interface 726. In some embodiments, the control interface 726 may comprise a dedicated handheld controller-like device 728. This controller 728 may be connected via a cable or wirelessly, and may be used by the patient directly and / or by an operator like an eye professional. In some embodiments, both the patient and operator may have their own dedicated controller 728. In some embodiments, the controller may comprise digital buttons, analog thumbstick, dials, touch screens, and / or triggers.

[0094] In some embodiments, control interface 726 may comprise a digital screen or touch screen, either on refractor 702 itself or part of an external module (not shown). In other embodiments, control interface 726 may let on or more external remote devices (i.e. computer, laptop, tablet, smartphone, remote, etc.) control light field refractor 702 via network interface 722. For example, remote digital device 730 may be connected to light field refractor 702 via a cable (e.g. USB cable, etc.) or wirelessly (e.g. via Wi-Fi, Bluetooth or similar) and interface with light field refractor 702 via a dedicated application, software1016P-049-W001 20or website (not shown). Such a dedicated application may comprise a graphical user interface (GUI), and may also be communicatively linked to remote database 724.

[0095] In some embodiments, the user or patient may give feedback verbally and the operator may control the vision test as a function of that verbal feedback. In some embodiments, refractor 702 may comprise a microphone (not shown) to record the patient’s verbal communications, either to communicate them to a remote operator via network interface 722 or to directly interact with the device (e.g. via speech recognition or similar).

[0096] Going back to Figure 1A, processing unit 714 may be communicatively connected to data storage 716, eye tracker 710, light field display 704 and refractive components 712. Processing unit 714 may be responsible for rendering one or more images or optotypes via light field display 704 and, in some embodiments, jointly control refractive components 712 to achieve a required total change in dioptric power. It may also be operable to send and receive data to internal memory 716 or to / from remote database 724 via network interface 722.

[0097] In some embodiments, diagnostic data may be automatically transmitted / communicated to remote database 724 or remote digital device 730 via network interface 722 through the use of a wired or wireless network connection. The skilled artisan will understand that different means of connecting electronic devices may be considered herein, such as, but not limited to, Wi-Fi, Bluetooth, NFC, Cellular, 2G, 3G, 4G, 5G or similar. In some embodiments, the connection may be made via a connector cable (e.g. USB including microUSB, USB-C, Uightning connector, etc.). In some embodiments, remote digital device 730 may be located in a different room, building or city.

[0098] In some embodiments, two light field refractors 702 may be combined side-by- side to independently measure the visual acuity of both left and right eye at the same time. An example is shown in Figure 8C, where two units corresponding to the embodiment of Figures 8A or 8B (used as an example only) are placed side-by-side or fused into a single device.

[0099] In some embodiments, a dedicated application, software or website may provide integration with third party patient data software. In some embodiments, software1016P-049-W001 21required to operate and installed on refractor 702 may be updated on-the-fly via a network connection and / or be integrated with the patient’s smartphone app for updates and reminders.

[0100] In some embodiments, the dedicated application, software or website may further provide a remote, real-time collaboration platform between an eye professional and user / patient, and / or between different eye professionals. This may include interaction between different participants via video chat, audio chat, text messages, etc.

[0101] In some embodiments, light field refractor 702 may be self-operated or operated by an optometrist, ophthalmologist or other certified eye-care professional. For example, in some embodiments, a user / patient may use refractor 702 in the comfort of his / her own home, in a store or a remote location.

[0102] With reference to Figure 9 and in accordance with one exemplary embodiment, a dynamic subjective vision testing method using vision testing system 700, generally referred to using the numeral 800, will now be described. As mentioned above, the use of a light field display enables refractor 702 to provide more dynamic and / or more modular vision tests than what is generally possible with traditional refractors / phoropters. Generally, method 800 seeks to diagnose a patient’s reduced visual acuity and produce therefrom, in some embodiments, a set of eye prescriptions or similar, either to be used cooperatively for a single refractive deficiency, or again respective sets of prescriptions to address multiple deficiencies in a complex lens design or multiple lenses.

[0103] In some embodiments, eye prescription information may include, for each eye, one or more of: distant spherical, cylindrical and / or axis values, and / or a near (spherical) addition value. A midrange value may also be included for some viewers. Within the present context, multiple such values may be output for each category, thus allowing for the manufacture of a complex multifocal and multizonal lens having a respective multifocal corrective area for each visual deficiency.

[0104] In some embodiments, the eye prescription information may also include the date of the eye exam and the name of the eye professional that performed the eye exam. In some embodiments, the eye prescription information may also comprise a set of vision1016P-049-W001 22correction parameter(s), as will be further discussed below, for operating any vision correction light field displays using the systems and methods described below. In some embodiments, the eye prescription may be tied to a patient profile or similar, which may contain additional patient information such as a name, address or similar. The patient profile may also contain additional medical information about the user. All information or data (i.e. set of vision correction parameter(s), user profile data, etc.) may be kept on external database 724. Similarly, in some embodiments, the user’s current vision correction parameter(s) may be actively stored and accessed from external database 724 operated within the context of a server-based vision correction subscription system or the like, and / or unlocked for local access via the client application post user authentication with the serverbased system.

[0105] Refractor 702 being, in some embodiments, portable, a large range of environments may be chosen to deliver the vision test (home, eye practitioner’s office, etc.). At the start, the patient’s eye may be placed at the required location. This may be done by placing his / her head on a headrest or by placing the objective (i.e. eyepiece) on the eye to be diagnosed. As mentioned above, the vision test may be self-administered or partially self-administered by the patient. For example, the operator (e.g. eye professional or other) may have control over the type of test being delivered, and / or be the person who generates or helps generate therefrom an eye prescription, while the patient may enter inputs dynamically during the test (e.g. by choosing or selecting an optotype, etc.).

[0106] As will be discussed below, light field rendering methods described herein generally requires an accurate location of the patient’s pupil center. Thus, at step 802, such a location is acquired. In some embodiments, such a pupil location may be acquired via eye tracker 710, either once, at intervals, or continuously. In other embodiments, the location may be derived from the device or system’s dimension. For example, in some embodiments, the use a head-rest and / or an eye-piece or similar provides an indirect means of deriving the pupil location. In some embodiments, refractor 702 may be self-calibrating and not require any additional external configuration or manipulation from the patient or the practitioner before being operable to start a vision test.1016P-049-W001 23

[0107] At step 804, one or more optotypes is / are displayed to the patient, at one or more dioptric power (e.g. in sequence, side-by-side, or in a grid pattern / layout). The use of light field display 704 offers multiple possibilities regarding how the images / optotypes are presented, and at which dioptric power each may be rendered. The optotypes may be presented sequentially at different dioptric power, via one or more dioptric power increments. In some embodiments, the patient and / or operator may control the speed and size of the dioptric power increments.

[0108] In some embodiments, optotypes may also be presented, at least in part, simultaneously on the same image but rendered at a different dioptric power. For example, Figure 10 shows an example of how different optotypes may be displayed to the patient but rendered with different dioptric powers simultaneously. These may be arranged in columns or in a table or similar. In Figure 10, we see two columns of three optotypes (K, S, V), varying in size, as they are perceived by a patient, each column being rendered at different degrees of refractive correction (e.g. dioptric power). In this specific example, the optotypes on the right are being perceived as blurrier than the optotypes on the left.

[0109] Thus, at step 806, the patient would communicate / verbalize this information to the operator or input / select via, for example, control interface 726 the left column as the one being clearer. Thus, in some embodiments, method 800 may be configured to implement dynamic testing functions that dynamically adjust one or more displayed optotype’s dioptric power in real-time in response to a designated input, herein shown by the arrow going back from step 808 to step 804 in the case where at step 808, the user or patient communicates that the perceived optotypes are still blurry or similar. In the case of sequentially presented optotypes, the patient may indicate when the optotypes shown are clearer. In some embodiments, the patient may control the sequence of optotypes shown (going back and forth as needed in dioptric power), and the speed and increment at which these are presented, until he / she identifies the clearest optotype. In some embodiments, the patient may indicate which optotype or which group of optotypes is the clearest by moving an indicator icon or similar within the displayed image.

[0110] In some embodiments, the optotypes may be presented via a video feed or similar.1016P-049-W001 24

[0111] In some embodiments, eye images may be recorded during steps 802 to 806 and analyzed to provide further diagnostics. For example, eye images may be compared to a bank or database of proprietary eye exam images and analyzed, for example via an artificial intelligence (Al) or Machine- learning (ML) system or similar. This analysis may be done by refractor 702 locally or via a remote server or database 724.

[0112] Once the correct dioptric power(s) needed to correct for the patient’s reduced visual acuity is defined at step 810, an eye prescription or vision correction parameter(s) may be derived from the total dioptric power(s) used to display the best perceived optotypes.

[0113] As a further illustrative example, in Figures 11 A and 1 IB, similar to Figure 10, different optotypes (e.g. letters, symbols, etc.) may be displayed simultaneously but at different perceived depths, to simulate the effect of adding a refractive optical component (e.g. change in focus / optical power). In figure 11 A, two images of the same optotype (e.g. letter E) are displayed, each on their own designated image plane (e.g. here illustrated as virtual image planes as an example only). In this example, image 2402 is located on designated image plane 2404 while image 2406 is located on designated image plane 2408, which is located further away. Optionally, as illustrated herein, the size of the image may be increased with increased depth so that all images displayed are perceived to be of a similar relative size by the user. In figure 24B, we see an example of the perception of both images as perceived by a user with reduced visual acuity (e.g. myopia), for example, wherein the image closest to the user is seen to be clearer. Thus, a user could be presented with multiple images (e.g. 2 side-by-side, 4, 6 or 9 in a square array, etc.) and indicate which image is clearer and / or and most comfortable to view. By sequencing through various combinations, for example in response to subjective feedback and / or again based on a monitored oculomotor response, a set of refractive corrections may be selected and / or simulated to produce an enhanced prescription that can be relayed to instruct manufacture of a complex lens having various refractive correction zones to address a same deficiency. Ultimately, a complex multifocal and multizonal eye prescription may be derived from this information. Moreover, in general, both spherical and cylindrical power may be induced by the light field display, as will be readily appreciated by the skilled artisan.1016P-049-W001 25

[0114] In some embodiments, the patient, an optometrist or other eye-care professional may be able to transfer the patient’s eye prescription directly and securely to his / her user profile store on said server or database 724. This may be done via a secure website, for example, so that the new prescription information is automatically uploaded to the secure user profile on remote database 724. In some embodiments, the eye prescription may be sent remotely to a lens specialist or similar to have prescription glasses prepared.

[0115] Various general processes for operating a light field refractor, as referenced herein, to subjectively assess a user’s reduced visual acuity have been detailed in previous patent publications, for example as listed above, and therefore, for brevity, these have not been reproduced herein. These and other techniques may be considered herein without departing from the general scope and nature of the present disclosure. Indeed, while the above focuses predominantly on discussing corrective measures for addressing spherical deficiencies, it will be readily appreciated that different cylindrical or even high order aberrations may be addressed using this technique. As described in Applicant’s own prior patents, a light field refractor may be used to ascertain not only spherical corrections to be applied in addressing a user’s visual deficiencies, but also axis and cylindrical values may be obtained to address conditions such as astigmatism. Accordingly, a multizonal lens area may be adapted to provide slightly deviating cylindrical / axis corrections, as will be readily appreciated by the skilled artisan.

[0116] While the present disclosure describes various embodiments for illustrative purposes, such description is not intended to be limited to such embodiments. On the contrary, the applicant's teachings described and illustrated herein encompass various alternatives, modifications, and equivalents, without departing from the embodiments, the general scope of which is defined in the appended claims. Except to the extent necessary or inherent in the processes themselves, no particular order to steps or stages of methods or processes described in this disclosure is intended or implied. In many cases the order of process steps may be varied without changing the purpose, effect, or import of the methods described.

[0117] Information as herein shown and described in detail is fully capable of attaining the above-described object of the present disclosure, the presently preferred1016P-049-W001 26embodiment of the present disclosure, and is, thus, representative of the subject matter which is broadly contemplated by the present disclosure. The scope of the present disclosure fully encompasses other embodiments which may become apparent to those skilled in the art, and is to be limited, accordingly, by nothing other than the appended claims, wherein any reference to an element being made in the singular is not intended to mean "one and only one" unless explicitly so stated, but rather "one or more." All structural and functional equivalents to the elements of the above-described preferred embodiment and additional embodiments as regarded by those of ordinary skill in the art are hereby expressly incorporated by reference and are intended to be encompassed by the present claims. Moreover, no requirement exists for a system or method to address each and every problem sought to be resolved by the present disclosure, for such to be encompassed by the present claims. Furthermore, no element, component, or method step in the present disclosure is intended to be dedicated to the public regardless of whether the element, component, or method step is explicitly recited in the claims. However, that various changes and modifications in form, material, work-piece, and fabrication material detail may be made, without departing from the spirit and scope of the present disclosure, as set forth in the appended claims, as may be apparent to those of ordinary skill in the art, are also encompassed by the disclosure.

[0118] While the present disclosure describes various exemplary embodiments, the disclosure is not so limited. To the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the general scope of the present disclosure.1016P-049-W001 27

Claims

CLAIMSWhat is claimed is:

1. A corrective eyewear lens, comprising; an optical medium having a common corrective optical refraction area defined therein for addressing a given user eye refraction deficiency; wherein said common corrective optical refraction area comprises at least two distinct corrective optical refraction zones defined by distinct optical refraction parameters to invoke respective optical refraction corrections optically deviated from one another while commonly addressing a same said given user eye refraction deficiency.

2. The corrective eyewear lens of Claim 1, wherein said given user eye refraction deficiency comprises user nearsightedness, and wherein each of said distinct optical refraction parameters optically correct for said user nearsightedness.

3. The corrective eyewear lens of Claim 1, wherein said given user eye refraction deficiency comprises user farsightedness, and wherein each of said distinct optical refraction parameters optically correct for said user farsightedness.

4. The corrective eyewear lens of Claim 1, wherein said distinct optical refraction parameters are within 0.5 diopters of one another.

5. The corrective eyewear lens of Claim 4, wherein said distinct optical refraction parameters are within 0.25 diopters of one another.

6. The corrective eyewear lens of Claim 1, wherein said distinct optical refraction parameters correspond to respective finetuning adjustments relative to a selected corrective optical refraction prescription.

7. The corrective eyewear lens of Claim 1 , wherein said at least two distinct corrective optical refraction zones comprise four distinct corrective optical refraction zones.1016P-049-W001 288. The corrective eyewear lens of Claim 1, wherein said distinct optical refraction parameters comprise distinct cylindrical correction parameters.

9. The corrective eyewear lens of Claim 8, wherein said distinct cylindrical correction parameters comprise at least one of distinct corrective cylindrical axis values or distinct corrective cylindrical power values.

10. The corrective eyewear lens of Claim 1, wherein said optical medium comprises two or more distinct common corrective optical refraction areas for addressing distinct user eye refraction deficiencies; wherein each of said distinct common corrective optical refraction areas comprises at least two said distinct corrective optical refraction zones for commonly addressing a same respective one of said distinct user eye refraction deficiencies.

11. The corrective eyewear lens of Claim 10, wherein each of said at least two said distinct corrective optical refraction zones for a first of said distinct common corrective optical refraction areas commonly address a user’s nearsightedness, whereas each of said at least two said distinct corrective optical refraction zones for a second of said distinct common corrective optical refraction areas commonly address a user’s farsightedness.

12. A method for instructing manufacture of a corrective eyewear lens for a given user eye refraction deficiency, comprising: digitally rendering juxtaposed digital content via a light field refraction device to be concurrently viewed at an output of said light field refraction device, wherein visual perception of each said juxtaposed digital content at said output is at least partially governed by the given user eye refraction deficiency and a respective distinct optical refraction correction applied to each said juxtaposed digital content by the light field refraction device; adjusting at least one said respective distinct optical refraction correction until said visual perception of at least two said juxtaposed digital content, having distinct corresponding optical refraction corrections, is subjectively equivalent;1016P-049-W001 29instructing manufacture of the corrective eyewear lens to define a common corrective optical refraction area having distinctly juxtaposed corrective optical refraction zones defined by said distinct corresponding optical refraction corrections to invoke respective optical refraction compensations optically deviated from one another while commonly addressing the given user eye refraction deficiency.

13. The method of Claim 12, wherein the method further comprises, prior to said instructing, digitally simulating user perception through the corrective eyewear lens by rendering simulation content via said light field refraction device while optically simulating said distinctly juxtaposed corrective optical refraction zones via corresponding light field adjustments.

14. The method of either one of Claim 12 or Claim 13, wherein the method further comprises manufacturing the corrective eyewear lens according to said instructing.

15. The method of Claim 12, wherein said juxtaposed digital content comprises juxtaposed optotypes each subject to said respective distinct optical refraction correction.

16. The method of Claim 15, wherein said juxtaposed optotypes comprise identical optotypes.

17. The method of Claim 15, wherein said juxtaposed optotypes comprise distinct optotypes.

18. The method of any one of Claims 15 to 17, wherein said juxtaposed optotypes comprise 4 juxtaposed optotypes rendered in respective quadrants each according to said respective distinct optical refraction correction, and wherein said adjusting is repeated until visual perception of at least two of said juxtaposed optotypes, having distinct corresponding optical refraction corrections, is subjectively equivalent.

19. The method of any one of Claims 12 to 18, wherein the user eye refraction deficiency comprises a spherical aberration, and wherein said distinct corresponding1016P-049-W001 30optical refraction corrections comprise distinct spherical corrections for addressing a same said spherical aberration.

20. The method of any one of Claims 12 to 18, wherein the user eye refraction deficiency comprises a cylindrical aberration, and wherein said distinct corresponding optical refraction corrections comprise distinct cylindrical corrections for addressing a same said cylindrical aberration.

21. The method of any one of Claims 12 to 18, wherein the user eye refraction deficiency comprises nearsightedness, and wherein said distinct corresponding optical refraction corrections comprise distinct spherical corrections for addressing said nearsightedness.

22. The method of any one of Claims 12 to 18, wherein the user eye refraction deficiency comprises farsightedness, and wherein said distinct corresponding optical refraction corrections comprise distinct spherical corrections for addressing said farsightedness.

23. The method of Claim 12, the method for instructing manufacture of a corrective eyewear lens for jointly addressing distinct user eye refraction deficiencies; wherein said digitally rendering and adjusting are repeated for each of the distinct user eye refraction deficiencies so to define a respective set of distinct corresponding optical refraction corrections for each one thereof; and wherein said instructing comprises instructing manufacture of the corrective eyewear lens to define a respective common corrective optical refraction area for each of the user eye refraction deficiencies such that each said respective common corrective optical refraction area has a respective set of distinctly juxtaposed corrective optical refraction zones defined by said respective set of distinct corresponding optical refraction corrections corresponding thereto.

24. A method for manufacturing a corrective eyewear lens, comprising:1016P-049-W001 31forming, within an optical medium, a common corrective optical refraction area for addressing a given user eye refraction deficiency; within said common corrective optical refraction area, forming at least two distinct corrective optical refraction zones defined by distinct optical refraction parameters to invoke respective optical refraction corrections optically deviated from one another while commonly addressing a same said given user eye refraction deficiency.

25. The method of Claim 24, wherein said given user eye refraction deficiency comprises user nearsightedness, and wherein each of said distinct optical refraction parameters optically correct for said user nearsightedness.

26. The method of Claim 24, wherein said given user eye refraction deficiency comprises user farsightedness, and wherein each of said distinct optical refraction parameters optically correct for said user farsightedness.

27. The method of Claim 24, wherein said distinct optical refraction parameters are within 0.5 diopters of one another.

28. The method of Claim 27, wherein said distinct optical refraction parameters are within 0.25 diopters of one another.

29. The method of Claim 24, wherein said distinct optical refraction parameters correspond to respective finetuning adjustments relative to a selected corrective optical refraction prescription.

30. The method of Claim 24, wherein said at least two distinct corrective optical refraction zones comprise four distinct corrective optical refraction zones.

31. The method of Claim 24, wherein said distinct optical refraction parameters comprise distinct cylindrical correction parameters.1016P-049-W001 3232. The method of Claim 31, wherein said distinct cylindrical correction parameters comprise at least one of distinct corrective cylindrical axis values or distinct corrective cylindrical power values.

33. The method of Claim 24, wherein the method further comprises: forming a distinct common corrective optical refraction area for addressing a distinct user eye refraction deficiency; and within said distinct common corrective optical refraction area, forming at least two further distinct corrective optical refraction zones for commonly addressing said distinct user eye refraction deficiency.

34. The corrective eyewear lens of Claim 5, wherein said distinct optical refraction parameters are within 0.15 diopters of one another.

35. The corrective eyewear lens of Claim 1, wherein a selected optical refraction parameter for a further corrective optical refraction zone within said common area is identical to one of said distinct optical refraction parameters of one of said at least two distinct corrective optical refraction zones.1016P-049-W001 33

Images