Abstract

Systems and methods for visual acuity calculation including consideration of a combination of ocular aberrations and lens aberrations are disclosed. One method includes obtaining ocular aberration data and introducing a correction in the defocus term of the ocular aberration data to account for longitudinal chromatic aberration. Lens aberration data is obtained, including performing raytracing through the ophthalmic lens of the patient. Correction to tilt and defocus terms of the lens aberration data is made to account for transverse and longitudinal chromatic aberrations. Polychromatic Point Spread Functions (PSFs) associated to the ocular aberration data and lens aberration data are used to generate retinal images. Retinal sampling is applied to the retinal images, followed by filtering and normalizing the retinal images is also performed. Finally, a maximum visual acuity value is determined. The methods are performed using one or more computing devices.

IPC Classes  ?

• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
• A61B 3/04 - Trial framesSets of lenses for use therewith
• A61B 3/032 - Devices for presenting test symbols or characters, e.g. test chart projectors
• A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
• G02C 7/02 - LensesLens systems
• G06N 3/04 - Architecture, e.g. interconnection topology

Abstract

Systems and methods for creating ophthalmic lens creation instructions are disclosed. The method includes obtaining an ophthalmic prescription and preparing lens creation instructions based on the ophthalmic prescription including determining a baseline lens design. The lens creation instructions are augmented to reduce myopia. The augmented lens creation instructions are created by determining a central region and a peripheral region in the baseline lens, computing a distortion pattern of bumps randomly located in the peripheral region of the lens such that the bumps have random sizes and random strengths, wherein the location, size and strength are created using probability distribution functions, and then computing a final back surface of the lens including incorporating the distortion pattern of bumps into the baseline lens. A lens created by this method is described herein. The method may be implemented on a computing device.

IPC Classes  ?

• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
• A61F 9/00 - Methods or devices for treatment of the eyesDevices for putting in contact-lensesDevices to correct squintingApparatus to guide the blindProtective devices for the eyes, carried on the body or in the hand
• G02C 7/02 - LensesLens systems
• G02C 7/04 - Contact lenses for the eyes
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal

Abstract

Systems and methods for creating ophthalmic lens creation instructions are disclosed. The method includes obtaining an ophthalmic prescription and preparing lens creation instructions based on the ophthalmic prescription including determining a baseline lens design. The lens creation instructions are augmented to reduce myopia. The augmented lens creation instructions are created by determining a central region and a peripheral region in the baseline lens, computing a distortion pattern of bumps randomly located in the peripheral region of the lens such that the bumps have random sizes and random strengths, wherein the location, size and strength are created using probability distribution functions, and then computing a final back surface of the lens including incorporating the distortion pattern of bumps into the baseline lens. A lens created by this method is described herein. The method may be implemented on a computing device.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G02C 7/04 - Contact lenses for the eyes
• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal
• A61F 9/00 - Methods or devices for treatment of the eyesDevices for putting in contact-lensesDevices to correct squintingApparatus to guide the blindProtective devices for the eyes, carried on the body or in the hand

Abstract

Systems and methods for creating ophthalmic lens creation instructions are disclosed. The method includes obtaining an ophthalmic prescription and preparing lens creation instructions based on the ophthalmic prescription including determining a baseline lens design. The lens creation instructions are augmented to reduce myopia. The augmented lens creation instructions are created by determining a central region and a peripheral region in the baseline lens, computing a distortion pattern of bumps randomly located in the peripheral region of the lens such that the bumps have random sizes and random strengths, wherein the location, size and strength are created using probability distribution functions, and then computing a final back surface of the lens including incorporating the distortion pattern of bumps into the baseline lens. A lens created by this method is described herein. The method may be implemented on a computing device.

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

An improved method for configuring progressive ophthalmic lenses is disclosed. The method includes computing an improved merit function that modulates reduction of peripheral values of the mean sphere according to the prescription sphere. According to the method the amount of reduction of mean sphere of the lens peripheral regions is dependent on the prescription resulting from a modified merit function. As such, the reduction of peripheral mean sphere varies based on the prescription. According to the modified merit function and resulting improved merit function, the greater the hyperopia and/or presbyopia defined in a prescription, the smaller the reduction of the peripheral value of mean sphere. Accordingly, when the peripheral mean sphere reduction is relaxed, a near region is made wider.

IPC Classes  ?

• G05B 19/4097 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
• G02C 7/02 - LensesLens systems

Abstract

Methods for lens configuration are disclosed. A method includes erasing a lens by heating the lens to a defined erasure temperature and writing a refractive index spatial distribution in the lens using an exposure pattern of directed ultraviolet (UV) light. The lens may be used as an ophthalmic lens or a lens used in industry. The lens comprises a rewritable material, including, for example, liquid crystals. The lens may be erased using heat of a defined temperature. The lens may be rewritten by applying other exposure patterns to the lens using UV light.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G02C 7/08 - Auxiliary lensesArrangements for varying focal length
• G02C 13/00 - AssemblingRepairingCleaning
• G02F 1/13 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells

Abstract

Methods for lens configuration are disclosed. A method includes erasing a lens by heating the lens to a defined erasure temperature and writing a refractive index spatial distribution in the lens using an exposure pattern of directed ultraviolet (UV) light. The lens may be used as an ophthalmic lens or a lens used in industry. The lens comprises a rewriteable material, including, for example, liquid crystals. The lens may be erased using heat of a defined temperature. The lens may be rewritten by applying other exposure patterns to the lens using UV light.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal
• G03F 7/20 - ExposureApparatus therefor

Abstract

Methods for ophthalmic lens design incorporating a visual acuity profile are disclosed. The methods include applying rules and functions to visual acuity profile data and an ophthalmic prescription to generate ophthalmic lens parameters for a subject. The visual acuity profile data includes a maximum visual acuity for the subject. The visual acuity profile data may also include a focus tolerance or tolerable blur. Tolerable blur may be measured by an ophthalmic professional or extrapolated. The visual acuity profile data may also include eye physical data such as pupil diameter and eye size, accommodation, retinal photoreceptor cell packing information and neural processing information. The visual acuity profile data may also include personal biographic and/or medical information for the subject.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal
• G02C 7/04 - Contact lenses for the eyes

Abstract

Methods for ophthalmic lens design incorporating a visual acuity profile are disclosed. The methods include applying rules and functions to visual acuity profile data and an ophthalmic prescription to generate ophthalmic lens parameters for a subject. The visual acuity profile data includes a maximum visual acuity for the subject. The visual acuity profile data may also include a focus tolerance or tolerable blur. Tolerable blur may be measured by an ophthalmic professional or extrapolated. The visual acuity profile data may also include eye physical data such as pupil diameter and eye size, accommodation, retinal photoreceptor cell packing information and neural processing information. The visual acuity profile data may also include personal biographic and/or medical information for the subject.

IPC Classes  ?

• G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)

Abstract

An improved method for configuring progressive ophthalmic lenses is disclosed. The method includes computing a traditional merit function with two changes. First, the merit function computation is limited by calculating only a preferred distance from the meridian rather than until 0. Second, an additional term is added to the merit function that calculates the mean sphere at a point that is at a reduced range from the maximum unwanted cylinder, rather than the entire range.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal

Abstract

An improved method for configuring progressive ophthalmic lenses is disclosed. The method includes computing a traditional merit function with two changes. First, the merit function computation is limited by calculating only a preferred distance from the meridian rather than until 0. Second, an additional term is added to the merit function that calculates the mean sphere at a point that is at a reduced range from the maximum unwanted cylinder, rather than the entire range.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal

Abstract

There is disclosed a method for recommending ophthalmic lens parameters. The method includes receiving user data from a plurality of lens wearers, receiving lens configuration information, and receiving satisfaction information for a plurality of lens wearers. The user data and satisfaction information are analyzed to identify and/or determine lens features based on correlations in the user data and the satisfaction information, including repeating the analyzing when additional user data and additional satisfaction information is received and/or on a regular basis. When new wearer information including a lens prescription for a new wearer and user data for the new wearer is received, lens parameters are produced for the new wearer including evaluating lens manufacturing characteristics based on the analyzing in correlation with the new wearer information.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G06N 99/00 - Subject matter not provided for in other groups of this subclass
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal

Abstract

There is disclosed a method for recommending ophthalmic lens parameters. The method includes receiving user data from a plurality of lens wearers, receiving lens configuration information, and receiving satisfaction information for a plurality of lens wearers. The user data and satisfaction information are analyzed to identify and/or determine lens features based on correlations in the user data and the satisfaction information, including repeating the analyzing when additional user data and additional satisfaction information is received and/or on a regular basis. When new wearer information including a lens prescription for a new wearer and user data for the new wearer is received, lens parameters are produced for the new wearer including evaluating lens manufacturing characteristics based on the analyzing in correlation with the new wearer information.

IPC Classes  ?

• A61B 3/02 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient
• A61B 3/032 - Devices for presenting test symbols or characters, e.g. test chart projectors
• A61B 3/107 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining the shape or measuring the curvature of the cornea
• G02C 7/02 - LensesLens systems
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal
• G02C 13/00 - AssemblingRepairingCleaning
• G06F 9/00 - Arrangements for program control, e.g. control units

Abstract

Systems and methods for additive manufacturing a homogeneous optical element are disclosed herein. A homogeneous pattern of light is shined on a polymerizable liquid to form each polymerized solid layer of the optical element.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• G02B 5/02 - Diffusing elementsAfocal elements
• G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
• G02B 1/12 - Optical coatings produced by application to, or surface treatment of, optical elements by surface treatment, e.g. by irradiation
• B29C 64/135 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
• B29C 64/264 - Arrangements for irradiation
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
• B33Y 80/00 - Products made by additive manufacturing
• B29K 105/00 - Condition, form or state of moulded material
• B29L 11/00 - Optical elements, e.g. lenses, prisms

Abstract

Systems and methods for additive manufacturing a homogeneous optical element are disclosed herein. A homogeneous pattern of light is shined on a polymerizable liquid to form each polymerized solid layer of the optical element.

IPC Classes  ?

• B29C 67/00 - Shaping techniques not covered by groups , or
• G02C 7/02 - LensesLens systems
• G02B 3/00 - Simple or compound lenses

Abstract

There are disclosed nanoemulsion optical materials, methods of making nanoemulsion optical materials and optical articles comprising nanoemulsion optical materials. A nanoemulsion optical material includes a polymer matrix and a plurality of nano-droplets, comprising an optically interactive material, directly dispersed within the polymer matrix.

IPC Classes  ?

• B01J 13/16 - Interfacial polymerisation
• G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
• G02B 5/23 - Photochromic filters
• G03C 1/72 - Photosensitive compositions not covered by groups

Abstract

There are disclosed nanoemulsion optical materials, methods of making nanoemulsion optical materials and optical articles comprising nanoemulsion optical materials. A nanoemulsion optical material includes a polymer matrix and a plurality of nano-droplets, comprising an optically interactive material, directly dispersed within the polymer matrix.

IPC Classes  ?

• B01J 13/16 - Interfacial polymerisation
• G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
• G02B 5/23 - Photochromic filters
• G03C 1/72 - Photosensitive compositions not covered by groups

Abstract

There are disclosed nanoemulsion optical materials, methods of making nanoemulsion optical materials and optical articles comprising nanoemulsion optical materials. A nanoemulsion optical material includes a polymer matrix and a plurality of nano-droplets, comprising an optically interactive material, directly dispersed within the polymer matrix.

IPC Classes  ?

• C09K 9/02 - Organic tenebrescent materials
• C08K 5/00 - Use of organic ingredients
• C08K 5/357 - Six-membered rings
• G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
• G02B 5/23 - Photochromic filters

Abstract

Systems and methods for smoothing a lens are disclosed herein. A monomer used to make or augment the lens according to an additive method is deposited on the lens surface to be smoothed. A film or membrane with certain elastic properties is pressed against the layered (stepped) surface, with the monomer in between the lens and the membrane. The pressure of the membrane spreads the monomer over the surface of the lens, filling the spaces between the layered (stepped) surface and the membrane. A curing agent is applied to transition the monomer into a polymer coating matching the curve of the membrane. The membrane is removed, leaving a clean, smooth lens surface.

IPC Classes  ?

• G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
• B29C 67/00 - Shaping techniques not covered by groups , or
• G02C 7/02 - LensesLens systems

Abstract

Systems and methods for smoothing a lens are disclosed herein. A monomer used to make or augment the lens according to an additive method is deposited on the lens surface to be smoothed. A film or membrane with certain elastic properties is pressed against the layered (stepped) surface, with the monomer in between the lens and the membrane. The pressure of the membrane spreads the monomer over the surface of the lens, filling the spaces between the layered (stepped) surface and the membrane. A curing agent is applied to transition the monomer into a polymer coating matching the curve of the membrane. The membrane is removed, leaving a clean, smooth lens surface.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• B29C 67/00 - Shaping techniques not covered by groups , or
• B29K 33/00 - Use of polymers of unsaturated acids or derivatives thereof, as moulding material
• B29K 105/00 - Condition, form or state of moulded material
• B29K 667/00 - Use of polyesters for preformed parts, e.g. for inserts
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing