QUALITY CONTROL METHODS OPTOMETRIC MEASUREMENTS

Description

TECHNICAL FIELD TO WHICH THE INVENTION RELATES

[0001] The present invention relates generally to the field of manufacturing ophthalmic compensation lenses mounted in eyeglasses.

[0002] It relates more specifically to a quality control process for optometry measurements used to determine the optical properties of refraction and the quality of ophthalmic lenses suitable for a glasses wearer. TECHNOLOGICAL BACKGROUND

[0003] Typically, the manufacture of corrective lenses requires, firstly, ophthalmic measurements to determine, in particular, the refractive characteristics of a person's eyes, and secondly, additional measurements, notably of the wearer's geometric and morphological parameters. These various measurements are necessary for the manufacture and fitting of the appropriate lenses onto the chosen frame and for adjusting the glasses to the wearer's vision and facial structure.

[0004] During an eye exam, an ophthalmologist or optometrist takes optometric measurements to assess a person's visual acuity. These measurements can be obtained using various optometric instruments, particularly a refractometer for measuring ocular refraction. If a person has impaired vision, the result of an eye exam is often a prescription for corrective lenses. This prescription typically specifies the refractive correction, often expressed by characteristics such as spherical, cylindrical, or prismatic power, axis, addition, and eye-lens distance, necessary to manufacture appropriate corrective lenses for each eye of the wearer.

[0005] On the other hand, an optometrist or an authorized professional seller such as an optician-consultant ensures the distribution, mounting of ophthalmic lenses on a glasses frame and the adjustment of the glasses on the wearer.

[0006] To this end, the optometrist or optician performs a series of additional optometric measurements specific to the individual. The choice of frame determines the physical dimensions of the lenses. The intended use of the glasses, such as near, far, and / or intermediate vision, leads to the selection of parameters for the ophthalmic lenses, including monofocal, multifocal, or progressive lenses. Furthermore, various options allow for the selection of the type and quality of ophthalmic lenses: organic or mineral material, surface treatment (e.g., anti-reflective coating), photochromic lenses, price range, etc.

[0007] The optician also determines the wearer's geometric and morphological characteristics, particularly interpupillary distances and the height of the focal point(s) relative to the lower edge of the frame. Various optometric instruments can be used to measure these characteristics, such as an autorefractometer, a photorefraction device, a measuring column, or a measuring tablet. Preferably, these instruments allow measurements to be taken in a natural, ergonomic posture for the wearer and under specific visual conditions. Advantageously, some instruments allow optometric measurements to be taken in several typical wearer postures, corresponding, for example, to natural vision conditions such as near, far, and / or intermediate vision.

[0008] In this document, an optometric measurement is defined as a measurement relating to one or more ophthalmic parameters of a wearer, in particular ocular refraction, and / or to one or more geometrico-morphological properties of the wearer, in particular interpupillary distances or the height of the visual axes relative to the edge of a frame, the measurement of pantoscopic angles, the lens-eye distance (VOD), the position of the center of rotation of the eye (CRO), the curvature of the frame, or behavioral parameters such as the eye-head ratio, reading distance, and the downward gaze when reading.

[0009] According to the laws in force in different countries, ophthalmic and geometric-morphological optometry measurements can be carried out by the same qualified professional or, on the contrary, must be carried out by different professionals, each with reserved activities.

[0010] All optometric measurements, whether ophthalmic, geometric-morphological, or otherwise, allow for the determination of lens refraction and the calculation of the base curvature of ophthalmic lenses. The accuracy of these geometric-morphological measurements of the wearer is essential to ensure the centering of corrective lenses mounted in spectacles relative to the wearer's visual axes.

[0011] The optometrist or optician then approves the launch of the production line for ophthalmic lenses for eyeglasses with a manufacturer. After receiving the appropriate ophthalmic lenses, the optician mounts the lenses onto the eyeglass frame chosen by the wearer and adjusts the glasses to the wearer's face.

[0012] However, it is observed that optometric measurements vary in accuracy depending on the instruments used, the care taken during the measurements, and the respective professional qualifications of the optometrists, opticians, or other authorized professionals involved in the various stages. Furthermore, measurement results are generally not provided with a margin of error.

[0013] Furthermore, some optometric measurements or geometric-morphological parameters do not correspond to a uniform definition. For example, the pantoscopic angle of a lens represents the angle formed by the general plane of the lens at the wearer's position relative to the vertical. However, the sign convention for the pantoscopic angle can vary depending on the instrument or measurement center. The same pantoscopic angle can thus be measured as +8 degrees or -8 degrees. Such differences in measurement are also a source of error.

[0014] Errors in the optical refraction parameters of ophthalmic lenses, in the geometric-morphological parameters, in the centration or in the adjustment of ophthalmic compensation lenses can, in some cases, generate ocular complications for the wearer, visual discomfort, headaches or nausea and more generally lead to dissatisfaction of the glasses wearer.

[0015] On the other hand, there is a need for traceability of optometry measurements to allow for the adaptation of the quality of ophthalmic lenses intended for a glasses wearer.

[0016] US patent 2013 / 231941 describes an automated ophthalmic eyeglass dispensing system that uses a patient image to determine certain facial measurements. EP patent 2,466,540 describes a remote monitoring and maintenance system for medical instruments. SUBJECT OF THE INVENTION

[0017] In order to remedy the aforementioned drawback of the prior art, the present invention proposes a method for quality control of optometry measurements for the determination of the opto-mechanical properties and quality of a corrective lens for spectacles adapted to a spectacle wearer according to claim 1.

[0018] Other non-limiting and advantageous features of the optometry measurement quality control method according to the invention are as follows: Step (d) includes a calibration step for said optometry measurement result; step (d) includes the following step: (d1) assigning at least one evaluation criterion to the optometry measurement result, the evaluation criterion being a function of the values ​​of the first recording; and / or (d2) assigning at least one of the same evaluation criteria to a cluster (or database cluster) associated with a plurality of optometry devices and / or a plurality of optometry measurement sites; the method further includes a step of transmitting at least one evaluation criterion to the first optometry measurement site and / or to the optometry device or respectively to said plurality of optometry devices and / or to said plurality of optometry measurement sites; step (d1) or (d2) includes a step of recording the evaluation criterion in a database;the first computer record is recorded in a database at the end of step (a), the set of digital measurement data is recorded in the same database at the end of step (b) and the result of the digital processing is recorded in the same database at the end of step (d); step (c) of transmission of the set of digital measurement data includes a step of recording a digital signature in the first record of the database; the method further includes a step of calculating a difference between the optometry measurement result and the digital data reference and a step of transmitting this difference to the first optometry measurement site and / or to the optometry device;The digital data repository includes at least one evaluation criterion representative of compliance with a pre-established measurement protocol, the reproducibility of the optometry device, the qualifications of a technician operating the optometry device, the type of optometry device, and / or the complexity of the optometry measurements; the method further includes at least one other embodiment of the method of claim 1, this other embodiment being associated with the same first identifier value corresponding to the same glasses wearer; the method includes a certification step of the first and / or second site based on a digital signature assigned respectively to the first and / or second site.

[0019] Advantageously, according to a particular embodiment, the process further comprises the following steps: (e) determine a set of digital data for the prescription of visual correction for a new corrective lens (in particular the opto-mechanical properties and the quality of a spectacle corrective lens) based on the set of digital data for the signed measurements, (f) have the set of digital data for the prescription of visual correction validated and digitally signed by a professional authorized to prescribe the refractive powers of the new corrective lens, (g) transmit to a third site the set of digital prescription data, linked to the first wearer identifier and to a signature attached to the authorized professional, (h) certify the signature transmitted in the previous step and transmit the result of this certification to the third site.

[0020] Preferably, the process includes the following step(s): (j) select the optical design (optical design and / or shape) or the optical design category or adapt the optical design calculation according to the signature attached to the authorized professional.(k) to electronically record an image file of a pre-existing prescription for the wearer's vision correction associated with the first wearer identifier; (l) to transmit to the second site a set of digital measurement data comprising the measurement result from step (b) and the image file of a pre-existing prescription associated with the first wearer identifier and a signature attached to the first site or the optometry device; (m) to determine, by processing the image file of a pre-existing prescription, the set of digital vision correction prescription data comprising the three refractive powers (sphere, cylinder, axis) of the new corrective lens; (n) to determine a manufacturing range and / or a design range of a corrective spectacle lens suitable for the wearer based on the value of the evaluation criterion. DETAILED DESCRIPTION OF A PROJECT EXAMPLE

[0021] The description that follows, with regard to the attached drawings, given by way of non-limiting examples, will make it clear what the invention consists of and how it can be carried out.

[0022] Regarding the attached drawings: there figure 1 schematically represents the architecture of a system for acquiring optometry measurements, processing optometry measurements, and manufacturing ophthalmic corrective eyeglasses implementing the process of the invention; figure 2 schematically represents a step diagram of a process according to one embodiment of the invention; the figure 3 schematically represents an example of a graphical representation of several criteria for evaluating optometry measurements. Device

[0023] There figure 1schematically represents the architecture of a multi-site system for the acquisition of optometry measurements, the processing of optometry measurements, the storage of measurements and the evaluation of these measurements, and for the manufacture of ophthalmic compensation glasses.

[0024] A first optometry site 10 is where optometry measurements are taken. A second site 20 processes the optometry measurements. A third site 30 manufactures the corrective eyeglasses. Finally, computer storage systems 40 are connected to these three sites. The first site 10 could be an optical store belonging to a chain of several stores, all using identical measuring devices and procedures, offering identical ranges of frames and lenses, with the different sites, for example, being connected by a computer network.

[0025] An optometry device 15 is located at the first optometry site 10. A glasses wearer 1 is located at the optometry measurement site 10 near the optometry device 15.

[0026] For example, the first optometry site 10 represents an ophthalmology or optometry practice, or an optician's shop. Alternatively, the first optometry site 10 could be a computer equipped with an image sensor. The first optometry site 10 is usually fixed but can also be mobile, such as in the case of an ambulance equipped with at least one optometry device.

[0027] An optometry device 15 is generally any optometry device such as a refractometer, an auto-refractometer, or any device providing a measurement of a geometrico-morphological parameter, such as an interpupillary distance measuring device, for example a pupillometer, a Visioffice or m'eye Fit type measurement column or tablet, or even a simple ruler.

[0028] The operation of the optometry device 15 is generally controlled by an operator who may be a qualified person, an optometrist, an ophthalmologist or an optician.

[0029] A unique identifier 13 is assigned to the optometry device 15 at the first optometry site 10 to allow identification of the optometry device 15 in use. Advantageously, the unique identifier 13 contains information on the type of optometry device, the manufacturer's brand, the date of manufacture, the date of the last calibration, and the type of measurements provided by this optometry device. Furthermore, the unique identifier 13 may contain information on a quality certification of the optometry device and / or the optometry site 1. For example, a manufacturer of ophthalmic lenses or eyeglasses supplies a network of opticians with a specific optometry device 15 that is certified by that manufacturer.In another example, a certification body verifies the conformity of the optometry device 15 to a quality standard, such as certification according to ISO 10342 for autorefractometers. A certificate of certification and a certification date can then be recorded in the unique identifier 13 of the optometry device 15. Optionally, the unique identifier 13 of the optometry device 15 is supplemented by another identifier to identify the operator taking the measurement on that device 15.

[0030] Advantageously, another unique identifier 11 is assigned to the optometry site 10 where the optometry device 15 is located. Identifier 11 can also be used to identify a chain of optical stores that all use the same measurement methods. Similarly, another unique identifier 12 is assigned to the wearer 1.

[0031] Preferably, the different available identifiers are grouped into a global identifier 14: the identifier 13 of the optometry device 15, the identifier 12 of the wearer 1, the identifier 11 of the measurement site 10 and possibly the identifier of the operator who controls the optometry measurement.

[0032] The first optometry site 10 can accommodate several optometry devices 15, which are either identical optometry devices providing similar measurements or optometry devices providing complementary optometry measurements. For example, the site 10 includes a wavefront measuring device, a refractometer, and a device for measuring the wearer's geometric and morphological parameters such as interpupillary distance, bridge width, distance between the inner surface of a lens and the cornea of ​​the wearer's eye, and pupil height relative to the lower edge of spectacles, along one or more directions of the wearer's gaze.

[0033] The optometry device generates one or more optometry measurements 16 of the eyeglass wearer. The first site 10 thus provides a set of digital data 18 comprising, on the one hand, the computer record 14 of the respective identifier(s) 11, 12, 13 of the first site 10, the eyeglass wearer 1, and the optometry device, and on the other hand, one or more optometry measurements 16. The device of the invention thus makes it possible to generate several digital records, where each digital record includes at least one identifier 12 of the wearer and one optometry measurement 16 for a pair: eyeglass wearer 1 and optometry device 15.

[0034] A reference database 45 is preferably stored on computer storage devices 40. The reference database 45 comprises a set of measurements performed on an optometry device 15, which is identified by its identifier 13. The reference database 45 may also include a set of optometry measurements performed by an identified operator. The reference database 45 may also include a set of optometry measurements 16 associated with a wearer 1, each of these measurements 16 being accompanied by a measurement date and attributed to an optometry device 15 identified by its identifier 13. The reference database 45 may also include optometry measurement statistics for different population categories based on age or various ocular pathologies.

[0035] Each digital record in the database relates to a pair consisting of a glasses wearer 1 and an optometry device 15, identified by their respective identifiers. In one embodiment, each digital record contains an optometry measurement 16, a wearer identifier value, and an optometry device identifier value 15. In another embodiment, each digital record contains an optometry measurement 16 and a computer link or hyperlink to another register containing a wearer identifier value and an optometry device identifier value 15. In yet another embodiment, each digital record contains a first computer link to a first register containing an optometry measurement 16 and another computer link to a second register containing a wearer identifier value and an optometry device identifier value 15.A person skilled in the art is capable of implementing other suitable methods of implementation.

[0036] Computer means make it possible to extract from each digital recording the recorded optometry measurement and the identifier value(s) that are linked to it by computer.

[0037] A computer processing system 21 located at a second site 20 allows for the digital processing of optometry measurements 16 from the optometry device 15. The processing system 21 is connected to the reference database 31. The processing system 21 performs a processing of the optometry measurements according to the data recorded in the reference database 31.

[0038] The processing system 21 can consist of a computer and a digital data processing system, based on processing algorithms known from elsewhere.

[0039] A third site 30 corresponds to a manufacturing unit for glasses equipped with corrective lenses adapted to the wearer's vision and their geometric-morphological measurements.

[0040] Advantageously, each of the measurement site 10, data processing site 20, manufacturing site 30, and data storage site 40 is connected to the other sites via telecommunications. The different sites are, for example, interconnected by a computer network. A computer system, for example, based on token exchange, ensures the security of data flow communications between the different sites. Process

[0041] There figure 2 schematically represents an example of process steps for quality control of optometry measurements.

[0042] In a first step a), a computer record 14 is made comprising at least the unique identifier 13 assigned to the optometry device 15 of the first optometry site 10. In addition, the computer record 14 also contains the identifier 11 of the measurement site 10 and / or respectively the identifier 12 of the wearer 1.

[0043] The computer record 14 of the identifier(s) 11, 12, 13 is transmitted to a database 41 of the computer means 40. Preferably, the computer record 14 includes the attribute of a digital signature to ensure the security of the exchanges and of the recording in the database 41.

[0044] In step b), at least one optometry measurement 16 is performed on a spectacle wearer 1 using an optometry device 15 at the first measurement site 10. The optometry measurement 16 includes, for example, an objective ocular refraction measurement comprising spherical power, cylindrical power, and axis values ​​for both of the wearer's eyes. Alternatively or in addition, the optometry measurement 16 includes a measurement of the vertical and horizontal position of the pupil of one of the wearer's eyes relative to a frame intended to hold a corrective lens.

[0045] Optometry measurement 16 may include a single measurement for a specific posture or a plurality of measurements 161, 162 corresponding to several specific postures. For example, a first optometry measurement 161 for distance vision corresponds to a posture of the wearer where the fixation point of gaze is less than approximately 2 diopters close and the gaze axis is horizontal. Another optometry measurement 162 for near vision corresponds to a posture of the wearer where the fixation point of gaze is between approximately 2 and 5 diopters close and the gaze axis is inclined downwards at an angle of 30 to 60 degrees relative to a horizontal line.

[0046] Additional information useful for the manufacture of lenses mounted in spectacles is preferably recorded and transmitted together with the optometry measurement 16. Thus, the choice by the customer and / or the operator of the type and quality of ophthalmic lenses: organic or mineral material, the choice of a surface treatment, for example anti-reflective, the choice of a tinted or photochromic lens, the choice of a price range are preferably recorded to be transmitted not only to the manufacturing site 30 but also to the data processing site 20.

[0047] At the end of step (b), a set of digital data 18 comprising on the one hand the computer record 14 of the identifier(s) 11, 12, 13 and on the other hand one or more optometry measurement(s) 16, 161, 162 can be transmitted to the storage means 30 to be recorded in the database 41.

[0048] The digital dataset 18 may include visual correction prescription data that do not necessarily derive from optometry measurements performed at the measurement site 10. For example, prescription data may be recorded from a previously established prescription.

[0049] Advantageously, the entire set of digital data 18 and the visual correction prescription are validated and digitally signed by a professional authorized to prescribe the correction powers of the new compensation lens(es).

[0050] In step (c), this set of digital data 18, comprising a computer record 14 of the identifier(s) 11, 12, 13 associated with one or more optometry measurements 16, 161, 162 of a wearer 1, is transmitted to the second optometry measurement processing site 20. Preferably, this transmission step includes a step of recording a digital signature in the database. This is particularly relevant when only persons with a digital signature are authorized to transmit digital data 18 from a measurement site 10 to a processing site 20, a manufacturing site 30, or to storage facilities 40.

[0051] In a step (d), the digital data 18 received by the processing site 20 is processed.

[0052] More specifically, the processing site 20 receives the set of digital data 18 directly from the measurement site 10 or extracts the set of digital data 18 from the computer storage means 41.

[0053] Thus, the processing system 21 accesses the set of digital data 18 comprising at least one optometry measurement 16 associated with the computer record 14 of the identifier(s), in particular the identifier 13 of the optometry device 15 used for the measurement, the identifier 11 of the measurement site 10 and / or respectively the identifier 12 of the wearer 1.

[0054] On the other hand, the processing system 21 accesses a reference database 45.

[0055] Based on the values ​​of the computer record 14 and the reference database 45, the data processing system 21 performs an optometry measurement processing 16. This processing may consist of one or more operations.

[0056] As an example, data processing includes a step of comparing the optometry measurement with a reference set of similar optometry measurements recorded in the reference database 45. The processing involves, for example, comparing measurement 16 with a reference value corresponding to a threshold, a minimum, a maximum, or an average value. Knowing the identifier 13 of the optometry device 16 and the identifier 12 of the wearer 1 and, possibly, the identifier 11 of the measurement site 10, the reference value used for the comparison is a specific value linked to this measuring device 15 and this wearer 1 and, possibly, to this measurement site 10. It is thus possible to obtain traceability over time of optometry measurements relating to a measuring device 15 and a wearer 1 and, possibly, to a measurement site 10.

[0057] The data processing system can also perform data formatting or calibration to bring the data into line with a standard reference frame. For example, pantoscopic angle measurements can differ from one instrument to another, or from one operator to another. The processing system therefore modifies the pantoscopic angle values ​​so that they are expressed, regardless of the measuring instrument, in the same measurement reference frame. The formatting or calibration performed can use offsets, proportionality coefficients, or more generally any calibration law that allows for conversion from a measurement reference frame to the standardized reference frame.This calibration can be applied to all measurements for which the device or operator does not provide standard values ​​(for example, pantoscopic angle, lens-to-eye distance (Dvo), eye center of rotation (Cro), or frame curvature). The values ​​thus formatted or calibrated can be transmitted to the measurement site 10 so that it can reuse these standardized values, for example, to transmit them to the manufacturing site 30.

[0058] The processing includes an evaluation step of a classification criterion, based on the value of the identifier 13 of the measuring device 15, the identifier of the wearer 1 and, possibly, the identifier 11 of the measuring site 10 or on an identifier assigned to the operator who carried out the measurement.

[0059] For example, an optometry device 15 is certified to deliver measurements with a specified reproducibility or margin of uncertainty. A classification, quality, or evaluation criterion can then be assigned based on the reproducibility of the optometry device. For example, a series of ocular refraction measurements 16 of a wearer is compared to the range of values ​​and reproducibility of an optometry device: if this series of measurements 16 is compatible with the reference range of values ​​and reproducibility, an evaluation criterion can be assigned to the ocular refraction measurement 16. This evaluation criterion can be transmitted by the processing system to the measurement site. If the series of measurements is validated, an average value from the series of ocular refraction measurements 16 can then be used.Conversely, if a series of measurements 16, carried out successively under reproducible conditions, shows a deviation exceeding the reproducibility of the measuring instrument 15 used, a measurement non-validation value is generated by the processing system. Advantageously, this non-validation is transmitted to the measurement site 10. Assigning a "non-validation" criterion triggers a new measurement or a check of the measuring instrument.

[0060] In another example, a measurement 16, for example of interpupillary distance (IPD), is taken on an optometry device 15. The processing system 21 compares this IPD measurement to statistical reference values ​​or to a previous IPD measurement of the same wearer 1. The result of this comparison is the determination of a deviation. The value of this deviation can be transmitted to the measurement site 10. Depending on whether this deviation is below or above a predetermined threshold, the processing system 21 transmits to the measurement site 10 a criterion for validating or invalidating the measurement 16, which can then be repeated.

[0061] In some cases, the device or operator may not be certified to deliver measurements with a certain reproducibility or margin of uncertainty, for example if it is an unknown or new device.

[0062] The measurement provided by the device can then be compared with a minimum acceptance threshold, and thus it can be verified that the measurement performance is sufficient to accept the measurements, and information on the acceptance of these measurements can be sent back to site 10.

[0063] Depending on whether or not an optometry device has a quality certificate, the processing system assigns a quality criterion to the optometry measurement.

[0064] In this document, associating or assigning refers to the act of creating a computer link between computer data. This computer link can be a common record within the same database, or a computer link between distinct records in one or more databases. A value associated or assigned to a record is therefore uniquely linked to that record in a computer-related way.

[0065] Another evaluation criterion can be based on adherence to a pre-established measurement protocol. For example, a quality charter applicable to a measuring device16 defines the steps of a measurement protocol, the measurement conditions, the settings, and / or the order of execution of the different steps (distance vision measurement, near vision measurement, etc.) that are necessary to obtain measurements conforming to a standard. Recording the measurements makes it possible to verify the order in which the measurement steps were carried out and, for each step, whether the defined execution conditions were met. An evaluation criterion for a pre-established measurement protocol can thus be assigned a posteriori to a measurement 16 or a set of optometry measurements. The processing can be used to verify the conformity of the measurements performed with a predefined measurement protocol.

[0066] In yet another example, the evaluation criterion assigned to measurement 16 is based on the professional qualifications of the operator who performed the measurement. For example, if the measurement is performed by highly qualified personnel, a high confidence criterion can be assigned to this measurement. Conversely, if the wearer performs an IPD measurement themselves using a computer camera, a low confidence criterion is assigned to this measurement. Feedback can be provided to site 10 regarding this criterion, along with the reason for the low value (repeatability issues, insufficient accuracy, insufficient dynamic range, etc.). Through this feedback, site 10 can potentially identify corrective measures to achieve a higher criterion.

[0067] An evaluation criterion may also be related to the degree of complexity of the measurements required to provide a suitable glasses proposal.

[0068] An additional criterion might correspond, for example, to a return rate due to faulty assembly, centering, or failure of the glasses to adapt to the wearer's vision. This additional criterion can be weighted to be combined with a function for suggesting suitable glasses or deciding on the appropriate type of glasses.

[0069] A cluster can be created in the database corresponding to a group of optometry equipment and / or a group of measurements, these groups being associated, for example, with a group of optician shops. Thus, it is possible to assign the same return rate criterion, or the rate of defective equipment and / or measurement protocol failures, to this corresponding cluster. This return rate or failure criterion can be simultaneously assigned to a cluster corresponding to multiple defective or non-compliant pieces of equipment and / or measurement procedures.

[0070] Finally, another evaluation criterion can be linked to the identifier 11 of a specific measurement site 10, for example, based on the quality of the available optometry equipment or the history of measurements performed at that measurement site 10. The identifier 11 of the measurement site 10 can be used to identify members of a professional network distributing corrective eyeglasses. This network is equipped with a specific category of optometry equipment, which is thus automatically recognized. Consider the case of a network of professionals who exclusively distribute a certain quality of ophthalmic lenses for a manufacturer, for example, multifocal or progressive lenses. Depending on the measurement site's identifier 11, different lens catalogs are then made available for manufacturing and distribution by the identified measurement site 10.

[0071] The evaluation criterion can be binary. For example, a binary evaluation criterion might correspond to the availability or unavailability of an optometry measurement, such as an IPD measurement or a differential refraction measurement for near and distance vision. A binary evaluation criterion can also correspond to the validation or non-validation of an optometry measurement. Another type of evaluation criterion can take on several values ​​on a scale.

[0072] The value of the evaluation criterion can then be transmitted to the storage system 40 to enrich a statistical database and / or to the measurement site 10. Thus, the evaluation criterion can be used to validate or not a measurement of ocular refraction or a measurement of a geometrico-morphological parameter.

[0073] The processing of a measure 16 can also be linked to several evaluation criteria such as the criteria detailed above.

[0074] These different evaluation criteria are, for example, represented on a radar chart, such as on the figure 3 where each radar beam represents the graduated scale of an evaluation criterion. The number of beams corresponds to the number of evaluation criteria.

[0075] Each evaluation criterion can be linked to a specific measurement: for example, a first criterion 24 is linked to the measurement of ocular refraction of the wearer's right eye 1, a second criterion 25 is linked to the measurement of ocular refraction of the left eye, a third criterion 26 is linked to compliance with a measurement protocol applied to the refractometry device, a fourth criterion 27 is linked to a measurement of the wearer's interpupillary distance, a fifth criterion 28 is linked to the quality of a measurement of the height of the right visual axis in relation to the lower edge of a frame, and a sixth criterion 29 is linked to the quality of a measurement of the height of the left visual axis in relation to the lower edge of a frame.

[0076] Alternatively, a single measurement can be linked to several evaluation criteria such as: the reproducibility of this measurement, compliance with the measurement protocol, the difference relative to a previous measurement of the same wearer...

[0077] The value of each evaluation criterion is represented by a marker on the corresponding radius. Such a graph allows visualization of an average value or threshold values, minimum or maximum, for each of the evaluation criteria.

[0078] In cases where several evaluation criteria are calculated, a weighting coefficient is advantageously assigned to each evaluation criterion.

[0079] A multi-criteria assessment allows for a global comparison of the measurement evaluation with pre-established benchmark measurements. For example, an area can be calculated on a spider diagram, with the area representing the overall quality of the measurements.

[0080] The results of the single or multi-criteria evaluation are transmitted to the manufacturing site 30. These results are also transmitted to the storage facilities 30, for the purpose of traceability of measurements or to complete a statistical database.

[0081] Based on both optometric measurements and the results of the evaluation of these measurements, the manufacturer can determine a manufacturing range and / or a design range best suited to the wearer's needs. Preferably, ranges defined by limit values ​​are recorded for one or more evaluation criteria. These ranges are then linked electronically to different manufacturing ranges and / or design ranges of corrective lenses from a manufacturer.

[0082] For example, for a given prescription for corrective eyewear linked to an assessment of average quality measurements, the manufacturer offers lenses in a range of average quality and / or in a predefined design category compatible with the required prescription.

[0083] For example, one can choose a personalized progressive design or a generic progressive design, or a progressive design linked to the wearer's activity, or a particular type of lens (SV / DBF / PAL).

[0084] When a prescription for corrective eyewear is based on high-quality measurements, the manufacturer can offer customized lenses with extremely precise characteristics and / or in a premium design category. In this case, the manufacturer can offer progressive lenses with very precisely determined focal point positions.

[0085] Conversely, for a given prescription of ocular correction which is accompanied by optometry measurements evaluated with a low degree of quality, it is preferable to direct the manufacture towards corrective lenses with high parameterization tolerances, which are compatible with the margins of error related to the low quality of the optometry measurements.

[0086] The manufacturing site 30 thus defines a proposal of glasses equipped with lenses compatible with the optometry measurements can then be transmitted from the manufacturing site 30 to the measurement site 10. The optician or the operator at the measurement site 10 can then offer the wearer one or more pairs of glasses compatible with the measurements taken and with the manufacturing constraints.

[0087] After the wearer has validated their choice of glasses, the manufacturing of the glasses can begin.

[0088] The range of lens manufacturing is preferably recorded on computer storage devices 30.

[0089] This process makes it possible to adapt the manufacture of glasses not only according to the required correction, but also according to an evaluation of the quality of the optometry measurements carried out to adjust the corrective lenses to the chosen frame of glasses.

Claims

1. Method for controlling the quality of optometric measurements for determining the optical-mechanical properties and the quality of a corrective spectacle lens suitable for a spectacle wearer, the controlling method comprising the following steps: (a) computationally recording a first recording (14) comprising at least one first value (12) of a first identifier allowing a spectacle wearer (1) to be identified and at least one other value (13) of another identifier allowing an optometric apparatus (15) at a first optometric measurement site (10) to be identified; (b) carrying out, by means of the optometric apparatus (15) of the first site (10), at least one optometric measurement (16) comprising at least one measurement of an ocular refraction parameter of the spectacle wearer (1) and / or a measurement of horizontal and vertical positions of the pupil of the eye of this wearer relative to a frame intended to accommodate the corrective lens; (c) transmitting to a second site (20) a numerical measurement dataset (18) comprising the optometric measurement (16) result of step (b), the numerical measurement dataset (18) being computationally associated with the first recording (14); (d) digitally processing the optometric measurement (16) result computationally associated with the first recording (14) depending on numerical reference data (45) and respective identifiers of the spectacle wearer (12) and of the optometric apparatus (13) of the first recording (14), the numerical reference data comprising an optometric reference measurement of the spectacle wearer (12) and of the optometric apparatus (15), and the digital processing comprising comparison and determination of a deviation between said optometric measurement (16) and the optometric reference measurement, to assign either a validation criterion or a non-validation criterion to said optometric measurement (16) depending on whether this deviation is less than or greater than a predetermined threshold; (g) transmitting to the first site (10) said non-validation criterion to repeat said optometric measurement (16) or, respectively, the validation criterion to accept said optometric measurement (16); and (i) generating at the third site (30) a digital corrective-lens order dataset triggering the manufacture of this eyeglass.

2. Method according to Claim 1, wherein step (d) comprises a step of calibrating said optometric measurement (16) result.

3. Method according to one of Claims 1 to 2, wherein step (d) includes a step of recording the evaluation criterion in a database (41).

4. Method according to one of Claims 1 to 3, wherein the first recording (14) is recorded in a database (41) at the end of step (a), the numerical measurement dataset (18) is recorded in the same database (41) at the end of step (b) and the result of the digital processing is recorded in the same database (41) at the end of step (d) .

5. Method according to either of Claims 3 and 4, wherein step (c) of transmitting the numerical measurement dataset (18) includes a step of recording a digital signature in the first recording (14) of the database.

6. Method according to one of Claims 1 to 5, furthermore comprising at least one other execution of the method of Claim 1, this other execution being associated with the same first identifier value corresponding to the same spectacle wearer.

7. Method according to one of Claims 1 to 6, furthermore comprising the following steps: (e) determining a numerical visual-correction prescription dataset of a new corrective lens depending on the numerical dataset of the signed measurements; (f) having the numerical visual-correction prescription dataset digitally signed and validated by a professional qualified to prescribe the refraction powers of a new corrective lens; (g) transmitting to a third site (30) the numerical prescription dataset associated with the first identifier (12) of the wearer and with a signature attached to the qualified professional; and (h) certifying the signature transmitted in step g) and transmitting the result of this certification to the third site.

8. Method according to one of Claims 1 to 7, furthermore comprising the following step: (j) selecting the optical design or the category of the optical design or adapting the calculation of the design depending on the signature attached to the qualified professional.

9. Method according to Claim 8, furthermore comprising the following steps: (k) computationally recording an image file of a pre-existing visual-correction prescription of the wearer associated with the first identifier of the wearer; (1) transmitting to the second site a numerical measurement dataset comprising the result of the measurement of step (b) and the image file of a pre-existing prescription, which are associated with the first identifier of the wearer and with a signature attached to the first site or to the optometric apparatus; and (m) determining by processing of the image file of a pre-existing prescription the numerical visual-correction prescription dataset comprising the three refraction powers of the new corrective lens.