CN-121978849-A - Optical stable photochromic multi-point defocus myopia control lens prescription generation method

CN121978849ACN 121978849 ACN121978849 ACN 121978849ACN-121978849-A

Abstract

The invention relates to the technical field of multi-point defocus, in particular to a method for generating an optical stability type photochromic multi-point defocus myopia control lens prescription, which comprises the following steps of scanning cornea by a non-contact optical device based on eyes of a wearer, and extracting iris and pupil characteristics, monitoring and adjusting reaction, carrying out three-dimensional reconstruction and multi-directional light path tracking analysis, optimizing ring belt distribution configuration, and adjusting an overlapping area by combining with photochromic requirements to form a fusion function partition structure. According to the invention, through correlation of individual visual behaviors and structural attributes in lens customization is realized by collecting multisource visual parameters and combining spatial modeling and focusing path analysis, functional requirements and photochromic response of different areas are dynamically fused by hierarchical adjustment of spatial structures of intervention areas, materials and microstructure data are synchronously output to manufacturing links, the collaborative matching capability of the visual area areas is enhanced, and the requirements of a wearer on visual comfort and optical response are met.

Inventors

CAI XIAOGU
Request for anonymity
Request for anonymity
Request for anonymity
Request for anonymity

Assignees

南通诺瞳奕目医疗科技有限公司
诺瞳奕目光学科技(丹阳)有限公司

Dates

Publication Date: 20260505
Application Date: 20260320
Priority Date: 20251219

Claims (10)

1. A method for generating an optically stable photochromic multi-point defocus myopia control lens prescription, the method comprising: S1, scanning cornea by using a non-contact optical device based on eyes of a wearer, extracting characteristic points of iris boundaries and pupil outer edges, monitoring and adjusting reaction changes, and collecting eye behaviors and photochromic sensitivity to obtain structural visual behavior parameters; S2, reconstructing each structural partition of the eyeball in a three-dimensional mode based on the structural visual behavior parameters, analyzing a main sight focusing path, associating spatial distribution with an eye scene, and adjusting an intervention sequence to obtain defocusing intervention space priority data; S3, based on the defocus intervention space priority data, referring to the ring belt structure parameters of the multi-point defocus lens, searching ring belt distribution in a partitioning mode, finely adjusting ring belt space positions of all the partitions, and optimizing coverage areas to obtain ring belt structure distribution configuration; s4, determining a multipoint defocus intervention band range based on the distribution configuration of the annular band structure, and judging that the defocus band is spatially overlapped with the optically variable response area by combining the eye scene of a wearer and the photochromic requirement, and adjusting the boundary of the overlapping functional area to obtain a fusion functional partition structure; S5, based on the fusion function partition structure, microstructure positioning and material arrangement parameters are read according to partitions, and the space distribution point and the material parameters are imported into a lens manufacturing process platform to obtain customized lens data.
2. The method of claim 1, wherein the structured visual behavior parameters include visual function data, pupil characteristic information, and photosensitive reaction types, the defocus intervention space priority data includes intervention region division, focus adjustment sequence, and space priority indication, the zone structure distribution configuration includes functional zone hierarchy, zone space position, and coverage specificity description, the fusion functional zone structure includes overlap zone definition, zone boundary attribute, and functional composite distribution, and the customized lens data includes microstructure distribution configuration, manufacturing bill of materials, and data output format.
3. The method for generating an optically stable photochromic multi-point defocus myopia control lens prescription according to claim 1, wherein the step of obtaining the structured visual behavior parameters comprises: S101, scanning the cornea surface through a non-contact optical device based on the eyes of a wearer, acquiring eye image data, identifying boundary features of the cornea, the iris and the pupil, analyzing the geometric positions of the outer edge of the pupil and the boundary of the iris, and optimizing feature point positioning to obtain a pupil and iris boundary coordinate set; s102, based on the pupil and iris boundary coordinate set, monitoring the regulation response dynamics of a wearer, based on continuous image or video data, analyzing the state change of ciliary muscles and crystalline lenses, tracking the adjustment process of focal length, combining with the time sequence change, and obtaining a regulation response curve by fitting and analyzing the state change trend in the regulation process; S103, based on the regulation response curve, collecting eye behavior data of the wearer, analyzing photochromic sensitivity of the wearer in each environment by combining with daily activity scenes of the wearer, and obtaining structural visual behavior parameters through correlation analysis of the behavior data and the sensitivity.
4. The method for generating an optically stable photochromic multi-point defocus myopia control lens prescription according to claim 1, wherein the step of obtaining defocus intervention space priority data comprises: S201, based on the structured visual behavior parameters, performing spatial positioning on cornea, anterior chamber, crystalline lens and retina areas, constructing an anatomical structure grid by utilizing three-dimensional space coordinates, optimizing the boundaries of each structural area based on a geometric algorithm, and adjusting structural partitions by combining the visual behavior parameters to obtain an eyeball structural partition coordinate set; s202, setting a multi-direction sight incidence point and calibrating a visual axis intersection area based on the eyeball structure partition coordinate set, analyzing the propagation paths of light rays in each structure in the eye, fitting by combining the focusing paths of each visual angle, and calculating the relation between each path and a retina focus to obtain a main sight focusing path sequence; and S203, calibrating the space coincidence region of each path and the eye-using scene according to the main sight focusing path sequence, analyzing the use intensity of each region by combining the eye-using frequency data, and adjusting the intervention priority according to the intensity sequencing to obtain out-of-focus intervention space priority data.
5. The method for generating an optically stable photochromic multi-point defocus myopia control lens prescription according to claim 1, wherein the step of obtaining the distribution configuration of the annulus structure comprises: s301, analyzing the spatial distribution of the eyeball center and the peripheral refraction structures of a wearer based on the defocus intervention spatial priority data, and mapping each refraction region by combining the visual behavior data of the wearer to obtain refraction structure spatial mapping data; S302, analyzing the space distribution characteristics of each annular belt based on the refraction structure space mapping data and combining the annular belt structure parameters of the multi-point defocused lens, carrying out partition screening on the annular belt according to each functional requirement, and optimizing the functional layout of the annular belt to obtain annular belt space distribution data; And S303, adjusting the space distribution of the zones based on the zone space distribution data, fine-adjusting the coverage area of the zones according to the intervention priority order, and optimizing the coverage area of the low-priority zone to obtain the zone structure distribution configuration.
6. The method for generating an optically stable photochromic multi-point defocus myopia control lens prescription according to claim 1, wherein the step of obtaining the fusion function partition structure comprises the steps of: S401, determining the range of a multipoint defocus intervention band in a lens design plane based on the distribution configuration of the annular band structure, evaluating the boundary of the defocus intervention band by combining with eye scene data of a wearer, and determining the coverage according to the adjustment requirement of eyes to obtain defocus intervention band range data; S402, analyzing the space overlapping condition of the defocus intervention band and the optically variable response area based on the defocus intervention band range data and combining the photochromic requirement of a wearer, and judging an overlapping area to obtain overlapping area data; And S403, carrying out boundary fine adjustment on the functional areas with overlapping one by one based on the overlapping area data, optimizing the overlapping area, and adjusting the boundary position and the area distribution according to the functional requirement to obtain a fusion functional partition structure.
7. The method for generating an optically stable photochromic multi-point defocus myopia control lens prescription according to claim 1, wherein the step of obtaining the customized lens data comprises: S501, based on the fusion function partition structure, sequentially reading microstructure positioning data and material arrangement requirements of each partition, and matching microstructure coordinates and material characteristics of each partition to obtain microstructure and material data; S502, according to the microstructure and the material data, the space distribution information and the material parameters of each partition are imported into a lens manufacturing process platform, and integrated arrangement operation is performed to obtain customized lens data.
8. The method for generating an optically stable photochromic multi-point defocus myopia control lens prescription according to claim 1, wherein the accommodation response change is a response process of ciliary muscle and lens states over time when the focal distance of the eye is monitored, and the photochromic sensitivity is a subjective sensitivity of an individual to the response of the individual to changes in lens speed, conditions of color, and ambient light.
9. The method of claim 1, wherein the eye-ball structural zoning means spatial zoning of cornea, anterior chamber, lens and retina eye anatomy by three-dimensional modeling, and the focusing path means a path from entering the eye to focusing or out of focusing on the retina.
10. The method for generating a prescription for an optically stable photochromic multi-point defocus myopia control lens according to claim 6, wherein the process of fine tuning the boundaries comprises adjusting the boundaries of the functional zones by a geometric optimization algorithm based on a spatial coordinate system based on a preset spatial density and a position constraint, wherein the preset spatial density comprises a weighted consideration of the frequency of use of the zones.

Description

Optical stable photochromic multi-point defocus myopia control lens prescription generation method Technical Field The invention relates to the technical field of multi-point defocus, in particular to a prescription generation method of an optical stable photochromic multi-point defocus myopia control lens. Background The technical field of multi-point defocus relates to the realization of the adjustment and control of refractive conditions of human eyes through specially designed optical lenses, and mainly focuses on the utilization of a lens structure with a plurality of defocus regions to adjust the distribution of light entering eyes so as to delay the occurrence and development of myopia. Wherein, the generation of the optical stable photochromic multi-point defocus myopia control lens prescription refers to the generation of a lens manufacturing scheme (namely a lens prescription) which is suitable for the individuation of a wearer according to the individuation eye related parameters of each wearer and the requirements of photochromic, defocus and the like, and in addition, the lens is manufactured by injection molding or pressing and the like according to the lens prescription, and is primarily customized according to the basic refraction parameters of the wearer so as to manufacture the manufactured lens. The prior art is often mainly divided into single parameter collection and static space, lacks depth fusion with specific visual behaviors and spatial structural characteristics of a wearer, cannot respond differently to multi-scene dynamic requirements, and causes insufficient matching between a lens annular functional area and actual visual requirements, the functional area is difficult to adapt to various eye environments, the visual area correction and photosensitive response effect are unstable under partial use scenes, and the synchronous coordination of the overall performance of the lens under complex requirements is difficult to ensure. Disclosure of Invention In order to solve the technical problems in the prior art, the embodiment of the invention provides a prescription generation method of an optical stable photochromic multi-point defocus myopia control lens. The technical scheme is as follows: in one aspect, a method for generating an optically stable photochromic multi-point defocus myopia control lens prescription is provided, comprising the steps of: S1, scanning cornea by using a non-contact optical device based on eyes of a wearer, extracting characteristic points of iris boundaries and pupil outer edges, monitoring and adjusting reaction changes, and collecting eye behaviors and photochromic sensitivity to obtain structural visual behavior parameters; S2, reconstructing each structural partition of the eyeball in a three-dimensional mode based on the structural visual behavior parameters, analyzing a main sight focusing path, associating spatial distribution with an eye scene, and adjusting an intervention sequence to obtain defocusing intervention space priority data; S3, based on the defocus intervention space priority data, referring to the ring belt structure parameters of the multi-point defocus lens, searching ring belt distribution in a partitioning mode, finely adjusting ring belt space positions of all the partitions, and optimizing coverage areas to obtain ring belt structure distribution configuration; s4, determining a multipoint defocus intervention band range based on the distribution configuration of the annular band structure, and judging that the defocus band is spatially overlapped with the optically variable response area by combining the eye scene of a wearer and the photochromic requirement, and adjusting the boundary of the overlapping functional area to obtain a fusion functional partition structure; S5, based on the fusion function partition structure, microstructure positioning and material arrangement parameters are read according to partitions, and the space distribution point and the material parameters are imported into a lens manufacturing process platform to obtain customized lens data. On the other hand, the structured visual behavior parameters comprise visual function data, pupil characteristic information and photosensitive reaction types, the defocus intervention space priority data comprise intervention area division, focusing adjustment sequence and space priority indication, the zone structure distribution configuration comprises functional zone layers, zone space positions and coverage specificity description, the fusion function partition structure comprises overlapping area definition, partition boundary attribute and function compound distribution, and the customized lens data comprise microstructure distribution point configuration, manufacturing bill of materials and data output format. On the other hand, the step of obtaining the structured visual behavior parameters specifically includes: S101, scanning the cornea surface through