WO2004026566A1 - Procede et dispositif pour fabriquer des lentilles de contact souples specifiques pour la clientele - Google Patents

Procede et dispositif pour fabriquer des lentilles de contact souples specifiques pour la clientele Download PDF

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Publication number
WO2004026566A1
WO2004026566A1 PCT/EP2003/009567 EP0309567W WO2004026566A1 WO 2004026566 A1 WO2004026566 A1 WO 2004026566A1 EP 0309567 W EP0309567 W EP 0309567W WO 2004026566 A1 WO2004026566 A1 WO 2004026566A1
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WO
WIPO (PCT)
Prior art keywords
contact lens
laser
manufacturing
lens blank
measured
Prior art date
Application number
PCT/EP2003/009567
Other languages
German (de)
English (en)
Inventor
Kristian Hohla
Birte Jansen
Gerhard Youssefi
Original Assignee
Technovision Gmbh Ges Fuer Die
Kristian Hohla
Birte Jansen
Gerhard Youssefi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technovision Gmbh Ges Fuer Die, Kristian Hohla, Birte Jansen, Gerhard Youssefi filed Critical Technovision Gmbh Ges Fuer Die
Priority to AU2003258684A priority Critical patent/AU2003258684A1/en
Priority to EP03797255A priority patent/EP1536942A1/fr
Publication of WO2004026566A1 publication Critical patent/WO2004026566A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/03—Observing, e.g. monitoring, the workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/03—Observing, e.g. monitoring, the workpiece
    • B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
    • B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
    • B23K26/0624—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses using ultrashort pulses, i.e. pulses of 1ns or less
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes

Definitions

  • the present invention relates to a production method for customer-specific soft contact lenses according to the preamble of claim 1, and to a device which can be used therefor.
  • a generic manufacturing method is known from DE 100 06896. First, the wavefront aberration of a patient's eye is measured. The measured values are used to calculate how material has to be removed from a prefabricated, standardized contact lens blank in order to eliminate the aberrations of the eye. Following the calculated ablation profile, material is removed from the lens blank by means of laser radiation in the next step.
  • a similar manufacturing process for contact lenses is described in DE 4002029.
  • the topography of an eye surface is first measured without a contact lens. Taking into account an adapted back surface of the lens and a tear lens likely to form between the eye and the contact lens, it is calculated how the front surface of the lens should be shaped. Finally, according to the data obtained, material is removed from a lens blank in order to produce the contact lens.
  • the material properties of the hydrated, soft contact lens prevent the targeted production of a certain surface shape with which the wavefront aberration of the patient's eye could be corrected.
  • DE 100 24 080 describes a manufacturing process in which it is carried out iteratively.
  • it lies preferably on the eye. Material is alternately removed and the result is checked using a new wavefront measurement.
  • This manufacturing process is very time consuming, especially for the patient.
  • iterative processing only individual contact lenses are ever produced, so that mass production cannot be carried out and the individual contact lenses are therefore expensive.
  • An object of the present invention is to improve a generic manufacturing method for customer-specific contact lenses in such a way that it delivers predictable results even with soft contact lenses. Another object is to provide a device with which the method according to the invention can be carried out.
  • the manufacturing method according to the invention is based on a number of surprising findings. As described above, it has been found that soft contact lenses on the eye often have a different power than the nominal one. This is probably due to the fact that they adapt to the shape of the cornea and thereby change their refractive effect. From this knowledge it follows that for the successful production of a customer-specific contact lens, a refractive measurement should be carried out with the contact lens on the eye.
  • the post-processing is not carried out on the contact lens that has been measured on the eye, but on a contact lens blank that is the same as the contact lens that is produced.
  • "Blank” here refers to a soft contact lens before it is hydrated. Studies have shown that the processing result is much more predictable if a soft contact lens is processed before it is hydrated. On the one hand, this is certainly due to the fact that the contact lens is firmer before it is hydrated The improvement becomes even clearer, however, if a removal process is carried out using a laser for post-processing. While the result of hydrated contact lenses is hardly predictable, contact lenses can be processed very precisely before hydration.
  • the time required for the customer or patient to cooperate is very short in the manufacturing method according to the invention, since cooperation with the patient is only required for the refractive measurement of the contact lens on his eye.
  • the post-processing of the contact lens blank takes place separately from the eye.
  • the post-processing takes place on a contact lens blank which is the same as the contact lens to be measured.
  • This has the advantage that both have exactly the same material composition due to the common production process. This ensures that the machined contact lens blank expands and behaves almost exactly like the contact lens measured on the eye after it has been hydrated, so that the machining result is also more predictable for this reason.
  • contact lenses from the same manufacturing process differ in their strength by no more than 1/8 of a diopter (0.125 D).
  • a so-called swelling factor has to be taken into account, which results from the later water absorption. It can either be obtained by comparing the size of a hydrated contact lens and a non-hydrated one or taken from a material table.
  • the contact lens blank can then be processed in such a way that the measured spherical and / or cylindrical aberrations of the second order are corrected.
  • Such a manufacturing process would reduce the contact lens storage costs enormously. It would be enough in the eye clinic, at the Have an ophthalmologist or optician with a matching lens set with a relatively small number of different contact lens strengths and the associated blanks.
  • the blanks could then be adapted to the respective customer or patient on site and processed accordingly.
  • such lenses are immediately available to the customer and do not have to be ordered from a large contact lens manufacturer. Since a large number of contact lenses of the same manufacture can be processed on the basis of the data measured once, the method according to the invention is very inexpensive.
  • the refractive measurement taken into account in the post-processing comprises a measurement of the wavefront of the eye with the contact lens seated on it.
  • the measured aberrations of the wavefront can then either be eliminated or higher aberrations can be specifically produced for presbyopia-correcting contact lenses, for example a coma.
  • a single wavefront measurement would be sufficient, but preferably several wavefront measurements are carried out in order to obtain a more meaningful value.
  • the position of the contact lens on the eye is measured and the measured position data are taken into account during the post-processing. This can ensure, for example, that the optical zone of the reworked contact lens is centered in front of the pupil.
  • the decentration and / or the axial position of the contact lens on the eye are preferably measured. If the position measurement is carried out over a plurality of measurement times, at least one value can be calculated from the measured position data, which is then used as the basis for the reworking of the contact lens blank. The more frequently the position measurement is carried out, the more meaningful the calculated value is. However, in the interest of the patient, the measurement time should not be too long. Particularly meaningful values that can be calculated from the location data are, for example, the mean value of the measurements or the maximum of a frequency distribution of the measured location data.
  • the surface topography of the cornea of the eye could be measured without the contact lens, and the measured topography could be taken into account when reworking the contact lens blank.
  • the inner surface of the contact lens blank could be processed in such a way that, after hydration of the blank, it conforms to the topography of the cornea in a defined manner.
  • An ablation profile is preferably calculated on the basis of the refractive measurement and / or the topography measurement, which must be removed from the contact lens blank in order to obtain the desired customer-specific contact lens.
  • the ablation profile can be determined by subtracting the measured wavefront from a target wavefront.
  • the reworking of the contact lens blank can then be carried out by material removal in accordance with the calculated removal profile.
  • Other processing methods are also conceivable, for example targeted material deposition or thermal deformation.
  • a removal procedure is useful because it can be carried out relatively quickly and with little effort.
  • a laser is a particularly easy-to-use tool for material removal. It has the advantage that there are no mechanical loads or deformations on the blank contact lens during processing.
  • Precise processing of the contact lens blank is possible above all with a pulsed laser, since the material removal at each location can thus be determined by the number of laser pulses set at this location.
  • the laser beam profile plays a crucial role in the surface quality of the reworked contact lens. Particularly smooth surfaces, which are desirable for contact lenses with a view to a higher visual acuity of the patient, can be achieved with a soft beam profile, in which the intensity drops continuously towards the sides.
  • the positions of the laser pulses to be set on the blank contact lens can be calculated from this, taking into account the laser beam profile and the material removal per laser pulse. It is advisable to calculate all positions before the post-processing and save them in a file so that the processing does not have to be interrupted later to calculate shot positions.
  • the position of the laser beam on the blank can be changed by a scanner in the beam path of the laser, or the position of the blank relative to the laser beam is determined by methods changed the holder of the blank.
  • Piezo elements would be particularly suitable for the method of mounting.
  • Efficient material removal from the contact lens blank is possible with a UV laser, since ultraviolet radiation is strongly absorbed in the transparent contact lens material. In this case, the material is removed photoablatively, i.e. by destroying the chemical bonds.
  • an ultrashort pulse laser could be used, which also allows processing of transparent materials in the visible.
  • the material would be removed by a photodisruptive process.
  • Alternative material removal processes on the contact lens blank can also be used. For example, material can be milled off from the contact lens blank.
  • the surface roughness in contact lenses is an essential quality feature, it is advantageous to measure the surface roughness of at least one reworked surface of the contact lens blank.
  • the present invention also provides a device by means of which the manufacturing method according to the invention for customer-specific contact lenses can be carried out.
  • This device has in particular a processing station for reworking a non-hydrated contact lens blank in accordance with the data of a refractive measurement and / or a measurement of the eye surface topography.
  • the device itself has at least one measuring instrument for measuring the position data of a contact lens, for measuring a wavefront and / or for measuring the top surface of the eye.
  • the data obtained with these measuring instruments can then be used directly to calculate an ablation profile.
  • the processing station and in particular the device for material removal are preferably computer-controlled. This enables the data obtained during the refractive measurement to be taken into account and also leads to a reliable processing result.
  • the device can comprise a laser. Its advantages have already been described above.
  • the laser itself can be, for example, a pulsed laser, in particular an ultra-short pulse laser.
  • the laser radiation in UV enables a photoablative processing process.
  • excimer lasers or frequency-multiplied solid-state lasers can be used as UV lasers.
  • a beam shaping unit in the beam path of the laser for generating a soft beam profile, since particularly smooth surfaces can be produced with such a beam profile. If the beam profile emitted by the laser is not soft enough, the desired profile can be generated using the beam shaping unit, for example a Gaussian profile.
  • FIG. 1 vertical sections through a contact lens blank, a contact lens and a measured wavefront
  • FIG. 2 shows a flow diagram of an exemplary embodiment of the method according to the invention
  • FIG. 3 shows a schematic drawing of an exemplary embodiment of a device that can be used for the method according to the invention.
  • Figure 4 is a schematic representation of a laser-based processing station for contact lens blanks.
  • a contact lens blank 1 is shown. It has a convex, in this example spherically curved front surface 2 and a concave rear surface 3 facing the eye.
  • the contact lens blank 1 is made of a hydrophilic, soft contact lens material, for example a hydrogel. When hydrated, ie when absorbing water, the contact lens blank 1 expands largely isotropically. In this case, the contact lens blank 1 becomes a contact lens 4, which is also shown in FIG. 1. Since, in the hydrated state, it no longer extracts water from the tear film of the eye, the contact lens 4 can be put on an eye.
  • a measured wavefront 5 of the optical system composed of one eye and the contact lens 4 is shown in a highly simplified manner above the contact lens 4 in FIG. Starting from a point of light created on the retina of the eye, the light propagates through the eye media, in particular the eye lens and the cornea, and through the attached contact lens 4. On the wave front 5 shown are all those points at which the light propagating in this way has the same phase.
  • the wavefront 5 can be measured, for example, using a Hartmann shack sensor.
  • the wave front 5 shown in FIG. 1 is greatly simplified. It is largely flat and thus corresponds to an "ideal" wavefront 7, as it would occur in an emmetropic eye contact lens system. With such a system, all light rays incident in parallel would be concentrated at a single point on the retina.
  • the wavefront 5 deviates from the dashed, flat "ideal" wavefront 7.
  • the waves emerging from the eye are retarded compared to the adjacent areas.
  • the deviation 6 of the measured wavefront 5 from a target The wavefront, in this example a plane wavefront, is referred to as aberration and can be represented mathematically, for example, by Taylor or Zemike polynomials.
  • the desired wavefront 7 does not necessarily have to be a plane wavefront be advantageous, for example, if the desired wavefront has a pronounced coma.
  • the contact lens 4 In order to correct the wavefront 5 of the eye-contact lens system with the aim of a flat wavefront 7, the contact lens 4 must lie between the points A ′ and B ′ Material to be removed.
  • An ablation profile 8 can be calculated from the aberration 6 of the measured wavefront 5 from the desired wavefront 7.
  • the front surface 2 of the contact lens 4 has a depression 9 in the exemplary embodiment shown. The light rays emerging from the depression 9 are accelerated compared to the light rays emerging from the other regions. In this way, the light receives the desired wavefront 7.
  • the removal of material is not carried out on the hydrated contact lens 4, but on a contact lens blank 1 that is the same as its manufacture. Since both originate from the same production process, they have exactly the same material composition. However, the contact lens blank 1 can be processed significantly better and more reliably.
  • the profile to be removed from the contact lens blank differs from the ablation profile 8 of the contact lens 4 because of the swelling factor. It indicates the material expansion when hydrated, i.e. the size ratio between the hydrated contact lens 4 and the contact lens blank 1.
  • the swelling factor is usually between 1 and 2.5.
  • the points A 'and B' on the front surface 2 of the contact lens 4 correspond to the points a and b on the contact lens blank 1.
  • the ablation profile 10 lying between these points a, b is significantly smaller than that of the contact lens 4 due to the swelling factor removing profile 8. Because of this size ratio, the removal of the profile 10 can take place faster at the same removal rate than if the profile 8 had to be removed.
  • the contact lens blank 1 is consequently not only more precisely and reliably machinable than the hydrated contact lens 4, but moreover the processing time is shortened enormously.
  • the flow chart shown in FIG. 2 illustrates the manufacturing method according to the invention for customer-specific contact lenses. A large number of standardized contact lens blanks 1 of the same manufacture are removed from a production process 20.
  • a set of such contact lens blanks 1 is preferably selected, the spherical or cylindrical refractive power of which already corrects the customer or patient as well as possible. In this way, only a small amount of material is removed later.
  • One of the contact lens blanks 1 is hydrated in method step 21, so that it becomes a contact lens 4.
  • the contact lens 4 can now be put on the eye to be corrected.
  • a refractive measurement 22 This can either be a measurement of the spherical and / or cylindrical values that the contact lens-eye system has, or a measurement of the wavefront 5.
  • further measurements can be carried out, for example position measurements of the contact lens 4 the eye. After these measurements 22, the cooperation of the customer or patient is no longer necessary.
  • a profile 8 to be removed from the contact lens 4 results from the measured aberrations 6 and a desired wavefront 7 selected by the operator or specified by the device.
  • the measured position data of the contact lens 4 can be taken into account, in particular values calculated from the measured position data such as, for example an average or a maximum of a frequency distribution.
  • the measured position data preferably capture the decentration of the contact lens 4 in the horizontal and vertical directions and the axial position of the contact lens on the eye.
  • the analysis step 23 also includes the calculation of a profile 10 to be removed from the contact lens blank 1. It results from the removal profile 8 calculated for the contact lens 4, taking into account the swelling factor.
  • a control file for a machining tool can in turn be calculated from the removal profile 10.
  • the control file specifies how the post-processing 24 of a contact lens blank 1 is carried out. In the case of a milling cutter, for example, up to which is specified Depth the tool must penetrate at any point on the surface of the contact lens blank 1. If a laser is used to remove the profile 10, the control file specifies at which location on the contact lens blank 1 how many laser pulses are to be set.
  • the end product of the manufacturing process described is a custom contact lens blank 25 which, when hydrated, becomes a custom contact lens.
  • a control step 26 can optionally be inserted.
  • the surface roughness p of the processed contact lens blank 1 is measured.
  • the surface of the contact lens blank 1 can, for example, be scanned with a fine needle tip, as in atomic force microscopy. If the control step 26 shows that the surface roughness p is below a certain threshold value p 0 , the blank 1 does not have to be processed further. However, if the surface is too rough, this roughness would later impair the visual acuity of a patient.
  • the surface of the blank 1 must therefore be smoothed in a further step 27, for example by means of a thermal and / or photothermal process.
  • the contact lens blank 1 could also be considered finished immediately after the smoothing 27. However, it makes sense to repeat the control 26 of the surface roughness p. If the surface roughness is still above the threshold value p 0 , the smoothing 27 would have to be repeated.
  • Process steps 24 and possibly 26, 27, i.e. the post-processing, measurement of the surface roughness and smoothing can be repeated for further contact lens blanks 1 in order to produce further customer-specific contact lenses. Both a sequential processing of different contact lens blanks 1 and a parallel processing are conceivable, which would accelerate the manufacturing process.
  • FIG. 2 shows, by way of example, four contact lens blanks 1 of the same manufacture, one of which is hydrated and used as a contact lens 4 for the patient, while The other three are reworked, so that three customized contact lens blanks 25 are produced as a result.
  • the method according to the invention can be used for the production of only a single customer-specific contact lens as well as for the production of a large number of such contact lenses.
  • FIG. 3 shows a rough diagram of a device 30 by means of which the manufacturing method according to the invention can be carried out.
  • a device 31 is provided on the device 30 for the patient's head.
  • it can comprise a chin rest and / or a forehead rest and serves to bring the patient's head and in particular his eye 32 into a stable position relative to the device 30.
  • An optical measuring unit 33 can be aligned on the device 30 such that it detects the patient's eye 32.
  • the measuring unit 33 can comprise one or a plurality of measuring instruments. These are preferably a wavefront sensor, for example a Hartmann shack sensor, and / or a digital camera for recording the position data of the contact lens 4. Further measuring instruments are conceivable, for example for recording the spherical and / or cylindrical values of the eye or of the eye contact lens. system.
  • the measuring unit 33 can further comprise one or more light sources.
  • the measuring unit 33 can be controlled and read out by means of a computer 34 contained in the device 30. Data can be input via an input unit 35, for example a keyboard. Of particular interest would be patient-specific data and data of the contact lens blanks 1 used in the method. The entered data and the values measured by the measuring unit 33 are displayed on a monitor 36.
  • the processing station 37 serves to rework one or more contact lens blanks 1. It is shown in somewhat more detail in FIG. A laser 40, for example a UV laser, is used as the tool for post-processing the contact lens blanks 1 in the processing station 37. In a preferred embodiment, an ArF laser at 193 nm is used. Good processing results are achieved with pulse durations of 5 to 100 ns and pulse energies of 2 - 30 mJ.
  • the laser beam 41 passes through a beam shaping unit 42. It will usually consist of an arrangement of lenses, diaphragms and homogenizers.
  • a desired, soft profile of the laser beam 41 is generated by means of the beam shaping unit 42, preferably a Gaussian profile.
  • the lenses of the beam shaping unit 42 also serve to collimate the laser beam 41 and / or to focus it.
  • the focus of the laser beam 41 lies approximately on the surface of a contact lens blank 1 fastened in a holder 43.
  • a pair of scanner mirrors 44 are provided for deflecting the laser beam 41 and can be controlled by means of a control file created by the computer 34. Their orientation determines the location at which the laser beam 41 strikes the surface of the contact lens blank 1. The scanner mirrors 44 are moved in such a way that the ablation profile 10 is ultimately removed from the blank contact lens 1.
  • An alternative possibility would be to focus the laser beam at a fixed location and instead to move the holder 43.
  • 43 piezo elements could be provided on different sides of the holder, which could also be controlled by means of a control file.
  • the holder 43 moves with the contact lens blank 1 such that the profile 10 is removed by the laser beam 41.
  • the holder 43 can be moved on a rail 45.
  • the holder 43 can be moved by means of the rail 45 in such a way that the reworked contact lens blank is brought into a defined position D with respect to a further measuring instrument 46.
  • the measuring instrument 46 can be, for example, an operating microscope, by means of which the reworked surface is visually checked, or an atomic force microscope, by means of which the surface roughness p is measured.
  • the machined surface can be smoothed 27.
  • the method according to the invention and the device used for it can deviate in many ways from the preferred exemplary embodiments described.
  • the topography analyzer either being integrated in the device 30 or being spatially separated therefrom.
  • the rear surface 3 of the contact lens blank 1 can then be processed in such a way that it clings to the surface shape of the cornea after hydration.
  • a holder 43 could be provided, which receives a plurality of contact lens blanks 1.
  • Such a parallel post-processing of the contact lens blanks 1 would reduce the manufacturing costs enormously. Since all blanks 1 originate from the same production process 20 and have been subjected to the same post-processing 24, it is sufficient to carry out the surface roughness p, for example, on a single one of the post-processed blanks 1. If the measured surface roughness p is too great, smoothing 27 would be carried out over all contact lens blanks 1 machined in parallel. This would save time when measuring surface roughness.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)

Abstract

L'invention concerne un dispositif (30) et un procédé pour fabriquer des lentilles de contact souples spécifiques pour la clientèle, selon lequel une ébauche (1) de lentilles de contact préformée est façonnée en fonction des données résultant d'une mesure de réfraction (22). Comparativement aux procédés de fabrication usuels, le procédé de l'invention est caractérisé en ce que la mesure de réfraction (22) est effectuée sur un oeil (32) sur lequel repose une lentille de contact (4) hydratée, le façonnage ultérieur en lentille de contact (4) de l'ébauche (1) de même fabrication étant réalisé avant son hydratation (21).
PCT/EP2003/009567 2002-09-05 2003-08-28 Procede et dispositif pour fabriquer des lentilles de contact souples specifiques pour la clientele WO2004026566A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003258684A AU2003258684A1 (en) 2002-09-05 2003-08-28 Device and method for production of customer-specific soft contact lenses
EP03797255A EP1536942A1 (fr) 2002-09-05 2003-08-28 Procede et dispositif pour fabriquer des lentilles de contact souples specifiques pour la clientele

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10241211.1 2002-09-05
DE10241211A DE10241211B4 (de) 2002-09-05 2002-09-05 Vorrichtung und Verfahren zum Herstellen kundenspezifischer weicher Kontaktlinsen

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WO2004026566A1 true WO2004026566A1 (fr) 2004-04-01

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EP (1) EP1536942A1 (fr)
AU (1) AU2003258684A1 (fr)
DE (1) DE10241211B4 (fr)
WO (1) WO2004026566A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8392018B2 (en) 2008-12-31 2013-03-05 Johnson & Johnson Vision Care, Inc. Apparatus and method for distributing ophthalmic lenses
WO2018108192A1 (fr) * 2016-12-13 2018-06-21 AIXLens GmbH Procédé de fabrication d'une optique à transmission
WO2018108197A1 (fr) * 2016-12-13 2018-06-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé de fabrication d'un système optique à transmission ou réflexion et lentille

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10316576B3 (de) * 2003-04-10 2004-11-18 Technovision GmbH Gesellschaft für die Entwicklung medizinischer Technologie Verfahren und Vorrichtung zum Herstellen weicher Kontaktlinsen

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RU2746925C2 (ru) * 2016-12-13 2021-04-22 Аиксленс Гмбх Способ изготовления пропускающей оптики
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AU2003258684A1 (en) 2004-04-08

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