Classifications

• • G—PHYSICS
  • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
  • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
  • G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
  • G16H50/70—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for mining of medical data, e.g. analysing previous cases of other patients
• • 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
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
  • A61F2/02—Prostheses implantable into the body
  • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
  • A61F2/16—Intraocular lenses

Definitions

• Computer program product The invention relates to a method and a device for selecting intraocular lenses and to a computer program product designed to carry out the method.
• IOL intraocular lens
• Another object is to provide a device for selecting an IOL that is easy to use and results in reproducible results in finding a custom IOL.
• the object is to provide a computer program product that allows an automated execution of the method for selecting an IOL. This object is achieved by a computer program product having the features of claim 18.
• the method according to the invention for selecting an intraocular lens (IOL) is carried out using a data processing device which accesses at least one database.
• the database contains intraocular lens information on lOLs with different primary and secondary parameters for the characterization of the lOLs.
• the primary IOL parameters are stored in a first information group (A) and the secondary IOL parameters in a second information group (B).
• A first information group
• B second information group
• Each IOL is thus characterized by its primary IOL parameters and its secondary IOL parameters;
• An IOL can have a parameter profile of any number of primary and secondary IOL parameters.
• at least one input device and at least one output device are used in the execution of the method, which is / are in each case operatively coupled to the data processing device.
• the method comprises the following steps: a) the user and / or user for the decision submitting predetermined subjective parameters that are related to the quality of vision and are stored in a third information group (C) in the database, and for the decision requesting a user input by means of the input device by the user and / or user and store the decisions in a fourth information group (D) of the database,
• the data processing device provides at least one biometric parameter of the eye and / or optical parameter which characterize visual aids previously used by the user,
• IOL type from the group comprising monofocal IOL, multifocal IOL, near-IOL , Remote IOL, aspherical IOL, toric IOL, chromatic IOL, multipart IOL, additional IOL, especially piggyback IOL or addon IOL,
• a user herein is meant a user of the method, such as a physician, optician, nurse, medical assistant or the like, whereas a “user” is the one to whom the IOL is to be deployed, that is the patient.
• for decision submitting is meant here queries, wherein the querying can be done in a direct question, a leading question or to affirm or deny declarative sentences.It can be advantageously provided for selection questions that can be answered with yes / no, "Accessing” herein is to be understood as meaning that the database is present on a memory rather than the data processing device or a storage device to which the data processing device is communicatively connected, such that the data processing device reads out or stores data there can.
• the database contains information about a set of all available LOLs with regard to primary and secondary IOL parameters as well as the decision-making options / decision options as subjective parameters Decisions on the survey, in turn, be stored in a separate information group in the database.
• the "questionnaire" of the third information group can in this case not be stored statically, but dynamically changeable, so that a physician can always adapt the query of the subjective parameters to his own benefit estimate meant, the quasi-catalog-listed already exist, as well as those that currently do not exist, but can be produced as a special order.
• the relevant IOLs are provided with a binary status, the state of which decides whether the IOL in question is included in the first subset or not.
• the "preselection” is used to lOLs that do not meet the requirements of the specific patient, for example, good near vision, good view in the intermediate / middle range and / or good distance vision, good visibility in the dark, low glare sensitivity and any combinations thereof, of to exclude from the further selection process or to consider in the selection that these IOLs do not fulfill the full requirement profile
• the at least one primary IOL parameter not only "soft” subjective, i. h., dependent on the patient's perception, information used, but also objectively measurable or already measured objective data on the biometry of the eye.
• biometric data is meant herein the information about the eye that is amenable to measurement.
• optical parameters that characterize the previous visual aid refers to parameters for refractive errors and their possible corrections prior to the onset of the IOL Visual aid can be any further known visual aid in addition to spectacles, contact lenses c) the following steps are carried out:
• step d) using the biometric parameter and by the data processing device therefrom determining at least one corneal property and an axial length of the eye or inputting at least the corneal characteristic and the axial length of the eye by means of the input device and the data processing device; e) processing the data from step d) by means of the data processing device Hand given criteria for qualifying lens properties, thereby determining at least one secondary target IOL parameter,
• the biometric parameter is optionally used for determining the corneal characteristic and the axis length, which means that the information necessary for determining the secondary IOL parameters can alternatively also be made available to the data processing device in other ways.
• the method according to this development makes it possible to automatically and reproducibly determine not only the primary IOL parameters, but also the secondary IOL parameters; Thus, the method determines all features for characterizing an IOL so that a concrete, needs-based selection can take place.
• "correlating" not only means seeking exact match of the secondary target IOL parameters with the secondary IOL parameters of the available IOLs, but includes the ability to set the IOLs with the most appropriate IOL parameters, which are closest to the target IOL parameter.
• step g) can also be provided to output the primary and secondary IOL parameters determined during the execution of the method and to make on this basis a customized IOL, here Raytracing soft- ware could also be used, for example the OphthaRAY software from Ophtha- SWISS AG,retetechnik Walke, PO Box 425, CH-9100 Herisau, Switzerland.
• the data processing device can be configured as an external computer, tablet, PDA, or as a smartphone or can also be part of the eye diagnostic device, so that all functions with high system integration are combined in one device.
• the eye diagnostic device can thereby via a network, also wirelessly, with the data processing device and / or the input / output device be connected.
• the input device and output device may also be a combined input / output device, for example a touch-sensitive display. In particular, it can also be provided to realize the query of the subjective parameters via the patient's own terminals, such as their personal smartphone.
• the corneal characteristic for example its topography or only properties of individual cornea locations, and the axial length of the eye can be determined in the further course.
• the secondary IOL parameters can be calculated by means of known formulas, for example calculation formulas according to Haigis, Hoffer, Holladayl, Olsen, SRK / T, SRK II, and / or other methods, in particular ray tracing methods, such as the aforementioned OphthaRAY , which are preferably directly related to the refractive power and geometry values.
• the method according to the invention provides advantages in this respect and thus increases patient satisfaction.
• reproducibility and objectivity are achieved by depositing the patient input required for determining the primary IOL parameters as questions for determining the subjective parameters on the data processing device and querying them automatically.
• subjective parameters By polling the user or the user or both (so-called subjective parameters), it is therefore possible to select the most suitable IOL for the particular application with a tailored profile of primary and secondary IOL parameters. The life situation of the patient resp.
• the "answers" are analyzed along with the biometric data of the eye and the optical parameters that characterize visual aids previously used by the user of an algorithm and used to make a pre-selection from the total of the lOLs based on the primary IOL parameters, only then, as a kind of "fine tuning", the secondary IOL parameters are determined based on the biometry data, the geometry parameters of the IOL, such as diameter or radius of curvature and refractive power.
• the steps of the method according to the invention can be interchanged in whole or in part. Incidentally, it is also possible for individual steps to be carried out spatially and temporally separate from one another and then brought together.
• an eye diagnostic device can be used.
• the at least one biometric parameter and / or the optical parameter for the identification of former visual aids used in step c) can be measured in step b) either by means of the eye diagnostic device or entered by means of the input device.
• the at least one biometence parameter can be topography and / or tomography data of the cornea, preferably at least the average corneal refractive power, and / or underlying layers of the eye, in particular in the form of curvature values, height data or coordinates, Refractive power information, wavefront information, refraction, sizes, lengths and distances in the eye, in whole or in parts, preferably the cornea thickness, anterior chamber depth, axial length, axial positions, chamber angle, sulcus size, pupil size, white-to-white distance and / or data to one Astigmatism or astigmatism.
• the optical parameter for characterizing former visual aids can be, for example, the refraction, preferably characterized by sphere, cylinder, axial position and near-addition.
• the mentioned biometric parameters and visual aids related parameters are to be understood as examples and not as an exhaustive list.
• the eye diagnostic device may include a cornea examination device.
• the eye diagnostic device can also have an axis length measuring device and / or a measuring device for measuring a further biometric parameter.
• the axial length of the eye can then either be measured in step b) by means of the eye diagnostic device or be entered before or after step b) in step b ') by means of the input device.
• step b) at least the radius of curvature of the cornea, preferably the topography of at least part of the cornea, can be detected.
• known eye diagnostic devices may be used, such as those sold under the name OphthaTOP by the OphthaSWISS AG, commercial center Walke, PO Box 425, CH-9100 Herisau, Switzerland, or also devices of other manufacturers and types allow both measurement of the cornea and other optical properties of components of the eye under the cornea.
• at least one central part of the corneal topography is detected, wherein the corneal topography can particularly preferably also be detected completely.
• optical properties of at least part of the eye is meant objectively measurable properties of the layers of the eye underlying the corneal surface, for example the thickness of the lens, the lens-cornea distance, or other of the biometric parameters already mentioned herein
• the enumeration is not to be considered exhaustive, it is possible that other optical properties of the eye may be detected - measured or entered - and used either directly or after a certain conversion in the procedure.
• the subjective parameters from the third information group may be, for example, parameters that are related to performed activities, expectation parameters related to postoperative freedom from the lens, desired post-operative vision in the vicinity, and / or the middle and / or the distance and / or disease parameters.
• “Performed activities” are here to be understood both in relation to a professional activity as well as activities in the private sphere, such as hobbies, a particularly good Nah-, middle and / or Fern Subjectivity may be occupational parameters: PC activity, motorist activity, twilight / night activities, close-up work, etc.
• the queried disease parameters may be, for example, the presence of keratoconus, Glaucoma, amblyopia, strabismus, diplopia, corneal injury, diabetic retinopathy, retinal disease, astigmatism, endothelial cell count, and / or other aberrations of the eye.
• other diseases or physical conditions may be queried, for example a pregnancy.
• Near, middle and long range are defined terms in ophthalmology; Usually, the visual acuity is examined in close range at distances of 25 cm, 33.3 cm or 40 cm, with a distance of 40 cm is considered common.
• the secondary IOL parameter may be the refractive power, in particular spherical and / or cylindrical refractive power.
• the primary IOL parameter can be selected from the group comprising IOL type, preferably onofocal IOL, near IOL, multifocal IOL, remote IOL, aspheric IOL, toric IOL, multipart IOL, additional IOL, especially piggyback IOL or addon -IOL be selected, but also include additional functional parameters, preferably protective function, filter function, twilight function and / or imaging function.
• a filter function may be a blue filter.
• aspherical lenses allow a particularly good view in twilight, so that the query of the desired twilight properties and the selection of the lens type is influenced. If not exactly one IOOL with the particular primary and secondary parameter profile is available, it may also be provided to achieve the necessary "custom" by a piggyback IOL with the appropriate primary IOL parameters and / or secondary IOL parameters. However, the proposal to use an additional IOL can not only be made if a lOL alone does not fulfill the desired primary and secondary IOL parameters, but also if additional advantages are associated with the two-IOL solution.
• Piggyback IOL and addon IOL basically refer to the same lens type, namely a second IOL at a different implant site than the capsular bag.
• a LOL can be used for example in the sulcus.
• multi-part lOLs are lenses that are used at an implantation site, but also consist of several parts.
• exclusion criteria for at least one group of IOLs grouped according to primary criteria can be stored in the database in a fifth information group (E).
• the exclusion criteria lead to the generation of a contraindicator, if given data from the fourth information group (D) and / or certain bi-indi- ometry parameters and / or visual aid parameters lie outside a range of values defined by the exclusion criteria.
• the contraindicator is assigned to those lOLs that meet the exclusion criteria, and the IOL / provided lOLs provided with the contraindicator are / are excluded from the selection in step f) and / or displayed in step g) along with the contraindicator, so the user select an IOL provided with the contraindicator, but perceive the contraindicator and be forced to make its decision plausible.
• warning criteria can be set for at least one group of IOLs which after primary IOL
• Parameters are / is grouped, be deposited. These lead in each case to the generation of a warning indicator if predetermined data from the fourth information group (D) and / or certain biometry parameters and / or visual aid parameters lie outside a range of values defined by the warning criteria.
• the warning indicator is assigned to those IOLs which fulfill the warning criteria and are taken into account in the selection in step f) and also output in step g).
• the warning indicators do not lead to an explicit exclusion of certain IOLs or an IOL implantation, but serve to alert the physician to potential complications so that he can, if necessary, provide in-depth consultation with the patient and / or certain objective ones Plausibilis readings again.
• warning is assigned and displayed to a specific IOL; however, this does not mean that this IOL is "inappropriate" for the patient, but is merely a reminder of mindfulness, for example, due to historical complications.
• the exclusion and / or warning criteria may be stored in the data processing device such that they are output not only when a parameter combination of the fourth information group and / or the biometrics and / or visual aid parameters match exactly, but also when the parameters are within certain limits "Limits" or ranges are in themselves only useful for the biometrics and / or visual aid parameters, since the fourth group of information ("arrt words") are binary values; but it can be provided to provide different "limit values" depending on the fourth information group.
• the exclusion and warning criteria or the "limit values” or area information on which they are based can be changeable, so that the doctor can make an appropriate setting for his treatment style and, in particular, limit the limits as a kind of "learning process” or expand, thereby making it possible to improve the process out of historical treatment errors.
• a plurality of subjective parameters related to the quality of vision as stored in the third information group in the database, are present, this can be queried in a decision tree in a structured manner.
• the decision tree can be a binary decision tree. You can also use multiple decision trees.
• a third decision-making level of the decision tree eye diseases preferably the presence of keratoconus and / or other diseases, and / or
• the steps a) and b) of the method can be interchanged such that the biometric parameters and the vision aid parameters are available before the user's "interrogation.”
• Data can then be objectively measured in one or more decision levels of the decision tree, loading preferably with regard to astigmatism, in particular corneal astigmatism, and / or the presence of a coma and / or keratoconus and / or other, even higher aberrations of the eye, are embedded in the decision flow.
• These objectively measured data may be acquired by the eye diagnostic device within the procedure or may be input by older measurements and / or measurements with other measurement devices.
• certain decisions of the decision tree are made not by subjective parameters (questioning the patient) but by objective measurement data. For the user, this "intermediate step" is not apparent, since the subsequent selection option is displayed immediately, although a decision has been made in the background.
• aberrations of higher order can be detected here, since these can be corrected via IOLs, in contrast to glasses or contact lenses.
• the errors of higher order usually play a subordinate role, but these are responsible, for example, for poor contrast vision (spherical aberration).
• step f) may include step f), sorting the lOLs selected in step f) according to predetermined criteria, and sorting a list for output in the step g) provide have.
• the sorting takes place here, for example, according to the sorting criteria postoperatively achievable visual function, preferably in terms of distance vision, near-mid-view, protective functions, view at dusk and / or other image-related functions relative to a normal-vision function.
• This will display the IOL or combination of lOLs that restore most natural visual functions as the topmost element of the list.
• the list is sorted by the ONS index and this in the output in the Step g) with displayed. If, for example, warning criteria are stored, the achievable ONS index is displayed together with them. In this case, the attending physician can make a risk-benefit assessment, in which he weighs the expected visual acuity against the risks represented by the warning criteria.
• the method may comprise the following step g '), in which a postoperative patient survey is carried out with regard to the visual functions and from this an ascertained ONS index is determined. At least some of the questions are asked, which were also used to determine the pre-operative ONS index or to sort according to ONS indices.
• This achieved ONS index indicates which visual quality the user / patient has achieved post-operatively.
• the questions for determining the achieved ONS index can preferably be "closed” and the subjective feeling of the patient as to whether the desired "visual function" has been reached can be interrogated.
• the subjective sensation of the patient is measurably scaled over the ONS index. Whether or not an achieved ONS index is determined can be made dependent on a "closed” question posed in the post-operative patient survey, for example, "Is your sight at close range better than before the operation?".
• a post-operative eye measurement can then be carried out with the eye diagnosis device, in which the at least one biometric parameter of the eye is detected.
• This step serves as a result control in which the postoperatively produced visual functions, preferably with regard to distance vision, near-mid-view, protective functions, twilight vision and / or other image-related functions, are evaluated and attained relative to a normal-sight function ONS index to be converted. Eye gauging in the event of discrepancies is designed to detect errors and avoid them for the future.
• the findings from the post-operative control step can in turn be returned to the IOL selection step c) to improve the predictability of the results.
• the achieved ONS index is compared with the achievable ONS index and according to predetermined criteria with the third information group (C) and / or with the value ranges of predetermined data from the fourth information group (D) and / or the particular biometric parameters for which the Exclusion and / or warning Criteria in the fifth (E) and sixth (F) information group stored in the data processing device, fed back according to predetermined criteria.
• the inventive device for selecting an IOL by means of the above method according to the invention has a data processing device and at least one input device and at least one output device.
• the data processing device is operatively coupled to the input device and the output device and is in communicative communication with a database.
• a database In the database
• intraocular lens information on lOLs with different primary and secondary parameters for the characterization of lOLs, with primary IOL parameters in a first information group (A) and secondary IOL parameters in a second information group (B), and
• predetermined subjective parameters are deposited, which are submitted to the user and / or user for decision and related to the quality of vision
• the data processing device is further communicatively linked to a source that provides at least one biometric parameter of the eye and / or optical parameters characterizing visual aids previously used by the user. After executing the method, the output device outputs a selection result with respect to at least one IOL.
• the "selection result" can therefore be an output of the first subset lOLs obtained after step c) of the method or an output of the concrete lOLs after step g). optical, acoustic, tactile etc, with a screen display being preferred.
• this device may have the eye diagnostic device as described above in connection with the method according to the invention. It is designed to measure the at least one biometric parameter and / or optical parameter used to identify former visual aids in step c).
• the eye diagnostic device may comprise a cornea examination device and / or an axial length measuring device and / or a device for measuring a further biometric parameter.
• the data processing device may be separate from the eye diagnostic device and communicatively connected thereto; In this case, all known means of communication, which are known in the art, wired or wireless, conceivable; starting from Bluetooth® over Wi-Fi or others.
• the data processing device can alternatively also be integrated in the eye diagnostic device.
• the input device and / or output device may also be present separately from the eye diagnostic device and / or the data processing device or may just be integrated into the eye diagnostic device.
• the data processing device may also coincide with the input and output device, such as when a PC is being used. Alternatively, however, these can also be separate, so that the data processing device is, for example, a server, which is connected via a data line, LAN or even wirelessly to the eye diagnostic device and to the input and the delivery device.
• the input and output device can also be any personal end devices, such as tablets, smartphones, PCs that act as a client. This allows the patient to conduct the survey to collect the relevant subjective parameters at home or in the waiting room of a medical practice, so that waiting times can be avoided, which for the patient means a gain in comfort and for the doctor to increase productivity.
• the cornea examination device may include means for dynamically or statically projecting a pattern on the surface of the cornea, such as a placido topograph, and means for detecting the projected pattern. But it can also be a tel to Scheimpflug photography and / or a coherence tomography means and / or a wavefront sensor, in particular a Hartmann-Shack sensor. Alternatively or additionally, the axial length measuring device and / or the device for detecting at least one further optical property of at least part of the eye can be a coherence tomography device and / or an ultrasound-based measuring device and / or a wavefront measuring device, in particular with a Hartmann-Shack sensor, exhibit. However, this list is not exhaustive; Other measuring means or methods can be used which are suitable for determining the same measured variables.
• a computer program product has a program code which is stored on a data carrier and which is provided for carrying out the method according to the invention and for use with the device.
• the program code of the computer program product forms the method steps of the method according to the invention for the IOL selection in the form of an algorithm in any programming language.
• This program code is read by the data processing device for carrying out the method steps.
• data carrier can be understood to mean any memory, such as magnetic, optical or electrical memory, it being understood that the memory can also be integrated in the eye diagnostic device.
• 2 a, b show a decision tree for determining the primary IOL parameters.
• FIGS. 1a to 1d show flowcharts of individual method steps of the method according to the invention, which illustrate the information linkage.
• Fig. 1a the query of the subjective parameters by the user in step a) is shown.
• the suggestions, ie available questions, are stored here in the third information group C, where any number of questions Fi to Fi is stored there and the questionnaire is also dynamically changeable, for example by the doctor (user).
• the answers (“decisions") of the user are then stored in the fourth information group D of the database, whereby the query step is complete.
• the questions may be questions regarding hobbies that require a special view, for example, whether there are activities as shooters, whether much is read, and / or professional activities, such as PC activity, motorist activity, activities at dusk / night, close-up work and / or historical disease parameters, such as the current spectacle wear profile, and many more questions.
• the queried disease parameters may be, for example, the presence of keratoconus, glaucoma, amblyopia, strabismus, diplopia, corneal injuries, diabetic retinopathy, retinal disease, astigmatism, and / or other aberrations of the eye.
• the "questions" or selection possibilities of the subjective parameters are binary selection options, so that the responses Ai to A can be machine processed further together with the biometric parameters MWi to MW measured by the eye diagnostic device ADV and / or (by means of the input device EV) and / or parameters that characterize previously used by the user visual aids that are stored in the information group D ', the decisions or responses Ai to A, which are stored in the fourth information group D, provided for further processing.
• the limit values in the fifth information group E and in the sixth information group F are determined, the primary target IOL parameters Xi to x, determined on the basis of which the preselection takes place; the exclusion and warning criteria thus represent the criteria for preselection.
• the target IOL parameters xi to x are stored in the information group a for further access. Via the warning or exclusion criteria, contra- or warning indicators are generated, which are taken into account in the preselection; if a contraindica- For a concrete IOL, this can be explicitly excluded from the selection or be taken into account with reservations.
• the responses Ai to A, and the biometric parameters MWi to MW, and / or parameters which characterize visual aids used by the user to date, provide information about the primary parameters to be fulfilled for the IOL (nominal parameters), in particular the IOL type, protective functions , Filter functions, twilight functions.
• the primary IOL parameters are determined which lead to an optimal visual result with the widest possible freedom from glasses in the patient's requirement profile given by the answers.
• Primary IOL parameters may be selected from the group consisting of monofocal IOL, near-IOL, multifocal IOL, remote IOL, aspheric IOL, toric IOL, chromatic IOL, multipart IOL, additional IOL, especially piggyback IOL or Addon IOL includes and may include functional parameters such as a protection function, filter function, twilight function, mapping function.
• the secondary IOL parameters are the "base" properties of the IOL, such as their geometry, in particular diameter and radius of curvature, or optical properties, such as spherical and / or cylindrical power.
• each IOL is characterized by its primary IOL parameters Xi to X, which are stored in the first information group A, and by secondary IOL parameters Yi to Yi, which are stored in the second information group B.
• the representation here is to be understood in such a way that each of the IOLs IOL1 to IOLi can have a parameter profile from any number of primary and secondary IOL parameters.
• the information about the entirety of the IOLs in the form of the primary and secondary IOL parameters of the information groups A and B are stored in a separate database and the subjective parameters of the information group C and the decisions of the information group D again in a separate database; in this case, it can be provided that the databases access one another. Certain lOLs out of the totality of available lOLs are excluded if they do not have the desired primary target IOL parameters Xi to x. To the To the To find the appropriate lOLs, the information group a is correlated with the information group A; this is shown in FIG. 1b.
• the "sorted out" IOLs remain in the process and are provided with a contraindicator and are output in step g) when outputting the results together with the warning or contraindicator who calls for attention to the physician (user) and possibly requires an active confirmation to select exactly that IOL.
• At least one property of the cornea as well as the axial length of the eye can be measured and made available to the data processing device or else the biometry parameters MWi to MW already recorded in step b) can be used and the property of the cornea as well as the axial length of the eye can be determined from it.
• the measurement data property of the cornea and the axial length of the eye necessary for the determination of the secondary IOL parameters can be known in part or completely from step b) and stored as biometry parameters Wi to MW in the information group D '. If additional measured data are required to determine the secondary setpoint IOL parameters yi to y 2 , these can optionally be made available as MWz. In particular, at least one corneal property and an axial length are used to determine the secondary target IOL parameter yi to y2 needed. It is now possible that these can be calculated from the biometric parameters known from step b); if not, the additional measurement of MW Z can be made in this case as well. be seen, in which then just the at least one Hornhauteigentician and an axle length are measured.
• the required information for determining the secondary IOL parameters can be obtained solely from the biometry parameters MWi to MW already provided in step b) (ie measured or input); insofar, the additional measurement of MWz is optional. In other words, it is possible to dispense with the additional measurement of MWz in certain circumstances since the required information has already been made available to the data processing device from step b). Conveniently, the biometric parameters available in step b) may still be converted before their processing to determine the secondary IOL parameters.
• FIGS. 2 a and 2 b show by way of example a decision tree in which the sequence of the individual queries of subjective parameters in step a) of the method is organized.
• the next question depends on the "answer given.”
• each decision branch is the appropriate IOL type for the given "answers"; either "base” IOL, toric IOL, or multifocal JOL.
• Such a decision tree may also be used to identify additional primary IOL parameters, such as filter functions, glare functions, and / or twilight vision, but this is not shown figuratively.
• LIST OF REFERENCE NUMBERS LIST OF REFERENCE NUMBERS

Applications Claiming Priority (2)

Publications (1)

Family

ID=55021390

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Family Cites Families (6)

• 2014
  • 2014-07-15 DE DE102014010405.2A patent/DE102014010405A1/de not_active Withdrawn
• 2015
  • 2015-07-15 CN CN201580038207.0A patent/CN107077524A/zh active Pending
  • 2015-07-15 WO PCT/EP2015/001447 patent/WO2016008584A2/de active Application Filing
  • 2015-07-15 EP EP15816079.6A patent/EP3170113A2/de not_active Withdrawn

Non-Patent Citations (2)

Also Published As

Similar Documents

Legal Events