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EP1662982A1 - Proc d pour d terminer une lentille intra-oculaire - Google Patents

Proc d pour d terminer une lentille intra-oculaire

Info

Publication number
EP1662982A1
EP1662982A1 EP04765396A EP04765396A EP1662982A1 EP 1662982 A1 EP1662982 A1 EP 1662982A1 EP 04765396 A EP04765396 A EP 04765396A EP 04765396 A EP04765396 A EP 04765396A EP 1662982 A1 EP1662982 A1 EP 1662982A1
Authority
EP
European Patent Office
Prior art keywords
refractive
postref
corneal
intervention
formula
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP04765396A
Other languages
German (de)
English (en)
Inventor
Wolfgang Haigis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Zeiss Meditec AG
Original Assignee
Carl Zeiss Meditec AG
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 Carl Zeiss Meditec AG filed Critical Carl Zeiss Meditec AG
Publication of EP1662982A1 publication Critical patent/EP1662982A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A61B3/0016—Operational features thereof
    • A61B3/0025—Operational features thereof characterised by electronic signal processing, e.g. eye models

Definitions

  • the invention relates to a method for determining an intraocular lens (IOL) that is optimally adapted to the optical conditions in the patient's eye.
  • IOL intraocular lens
  • the refractive power PIOL of the intraocular lenses depends on the one hand on patient data to be measured (axis length L, corneal refractive power K, anterior chamber depth d, corneal radius R) and on the other hand on the properties of the intraocular lens to be implanted, expressed in the form of formula-specific lens constants (e.g. A constant) , ACD constant, surgeon factor, pACD, aO, a1, a2 etc.).
  • the geometrical parameters axis length L, anterior chamber depth d and corneal radius R are measured with the appropriate measuring devices before the operation for the respective patient.
  • One such device is the IOLMaster from Carl Zeiss Meditec.
  • the A constant depends on the IOL used, is determined by the manufacturer of the IOL and generally has a value between 118 and 119
  • the ACD constant describes the value of the anterior chamber depth (anterior chamber depth)
  • the surgeon factor describes a correction factor dependent on the doctor
  • pACD is a personalized ACD constant
  • aO, a1 and a2 are special empirically determined correction factors.
  • RC corneal radius
  • ref target refraction
  • dBC apex distance between cornea and glasses
  • dBC 12 mm
  • n refractive index of aqueous humor and vitreous (1,336)
  • VKpr preoperative anterior chamber depth (ultrasound measurement)
  • ACD constant ACD constant of the manufacturer
  • a constant (ACD constant + 68.747) / 0.62467
  • d is used to calculate the postoperative refraction actually achieved from (1).
  • the individual optical anterior chamber depths obtained in this way are correlated according to (2) with the preoperative ultrasound measurements for the anterior chamber and axis length, which directly result in the optimized constants aO, a1 and a2.
  • This Fit parameters are different for each lens, so they are suitable as independent constants for characterizing a given intraocular lens.
  • the invention is based on the object of overcoming the disadvantages of the prior art and of specifying a method for calculating an optimally adapted IOL even when the cornea geometry has been changed by a refractive intervention.
  • the method for IOL calculation after refractive corneal surgery consists of the following steps: • Identification of the corneal refractive indices required for the respective IOL formula
  • R2C p0 s t r ef determined after the refractive intervention.
  • Fig. 1 a schematic cross section of the eye
  • Fig. 2 an enlarged section of the cornea
  • FIG. 1 the cross section of the eye shows the cornea 1, anterior chamber 2, eye lens 3, vitreous body 4 and retina 5.
  • the cornea 1 has a front radius R1C and a rear radius R2C.
  • the distance from the anterior corneal surface 6 to the retina 6 is referred to as the axis length AL.
  • the eye lens 3 is removed and replaced by an artificial intraocular lens.
  • 2 shows the change in the geometric relationships by a refractive operation. Material is selectively removed from the anterior corneal surface 6 with a laser or after dissecting the cornea from the inside of the cornea, so that the result is a different radius R1 C post than the preoperative radius R1 C pre .
  • By modifying the thickness of the cornea there is also a change in the posterior radius R2C, but this is generally much smaller than the change in the front radius.
  • the refractive power of the cornea must be included in addition to the refractive power of the removed eye lens.
  • the IOL calculation follows the following scheme
  • Keratometry has proven itself for the determination of the corneal front radius in untreated eyes, as has the topography.
  • the measured values d of the usual keratometry and topography in eyes after refractive surgery are afflicted with considerable errors, especially in eyes after radial keratotomy. Radii that are too steep are determined there; significant errors also occur after PRK and LASIK treatments.
  • the corneal front radius cannot be measured directly with sufficient accuracy.
  • the other required radii are derived in a suitable manner. If no data is available for a patient before the refractive intervention, all radii must be derived.
  • f1 is a device-specific transformation function, which can be obtained by calibrating the measuring device. It is usually a regression line.
  • Keratometry known before refractive surgery (“LASIK pass”): - Derivation of R1C pra from preoperative keratometry. It may be necessary to take into account the so-called keratometer index of the keratometer used.
  • f2 is a transformation function which has been determined, for example, statistically.
  • R R (AL)
  • Haigis W biometry, in: ophthalmological examination methods, Straub W, Kroll P, Küchle HJ (Hrsg), F.Enke Verlag Stuttgart, 255- 304, 1995, the disclosure of which is hereby incorporated by reference.
  • the axis length present after the refractive intervention differs only slightly (namely by the ablation depth of typically up to about 150 ⁇ m) from the preoperative axis length, so that the use of the current postoperative axis length in the derivation of R1C pr eal f instead of the preoperative value of Axis length leads to negligible errors.
  • f4 is a transformation function that depends on the type of refractive intervention, which in turn can be derived from the statistical evaluation of a sufficient number of patients.
  • R2C p0 stref R2C P rärf, which means that the influence of the refractive intervention on the posterior radius R2C is neglected.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Biomedical Technology (AREA)
  • Signal Processing (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Eyeglasses (AREA)

Abstract

L'invention concerne un procédé servant à déterminer une lentille intra-oculaire à adaptation optimale, destinée à des patients présentant une cornée modifiée par chirurgie réfractive. Le procédé selon l'invention comprend les étapes suivantes : - détermination des indices de réfraction (D12Cpréréf, D'Cpréréf) de la cornée spécifiques à la formule avant l'intervention réfractive ; - détermination des indices de réfraction (D12Cpostréf, D'Cpostréf) de la cornée spécifiques à la formule après l'intervention réfractive ; - mise en oeuvre dans la formule de lentille intra-oculaire respective des indices de réfraction (D12Cpréréf et D12Cpostréf ou D'Cpréréf et D'Cpostréf) de la cornée spécifiques à la formule avant et après l'intervention réfractive.
EP04765396A 2003-09-23 2004-09-18 Proc d pour d terminer une lentille intra-oculaire Withdrawn EP1662982A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10344781A DE10344781A1 (de) 2003-09-23 2003-09-23 Verfahren zur Bestimmung einer Intraokularlinse
PCT/EP2004/010506 WO2005030044A1 (fr) 2003-09-23 2004-09-18 Procédé pour déterminer une lentille intra-oculaire

Publications (1)

Publication Number Publication Date
EP1662982A1 true EP1662982A1 (fr) 2006-06-07

Family

ID=34306098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04765396A Withdrawn EP1662982A1 (fr) 2003-09-23 2004-09-18 Proc d pour d terminer une lentille intra-oculaire

Country Status (5)

Country Link
US (1) US20080231809A1 (fr)
EP (1) EP1662982A1 (fr)
JP (1) JP2007505716A (fr)
DE (1) DE10344781A1 (fr)
WO (1) WO2005030044A1 (fr)

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US7303582B2 (en) * 2003-03-21 2007-12-04 Advanced Medical Optics, Inc. Foldable angle-fixated intraocular lens
US7556378B1 (en) 2003-04-10 2009-07-07 Tsontcho Ianchulev Intraoperative estimation of intraocular lens power
JP4972546B2 (ja) 2004-04-20 2012-07-11 ウェーブテック・ビジョン・システムズ・インコーポレイテッド 一体化した手術用顕微鏡および波面センサ
DE102005062238A1 (de) * 2005-12-22 2007-07-05 Carl Zeiss Meditec Ag Ophthalmologisches Messsystem und Verfahren zur Ermittlung der biometrischen Daten eines Auges
WO2009120910A1 (fr) 2007-04-24 2009-10-01 Abbott Medical Optics Inc. Systèmes de mesure oculaire
US7993398B2 (en) * 2007-04-24 2011-08-09 Abbott Medical Optics Inc. Angle indicator for capsular bag size measurement
JP5172216B2 (ja) * 2007-06-04 2013-03-27 株式会社ニデック 眼科測定装置
WO2008148517A1 (fr) * 2007-06-04 2008-12-11 Carl Zeiss Meditec Ag Procédé permettant de déterminer la puissance d'une lentille intraoculaire
US9216080B2 (en) 2007-08-27 2015-12-22 Amo Groningen B.V. Toric lens with decreased sensitivity to cylinder power and rotation and method of using the same
US8974526B2 (en) 2007-08-27 2015-03-10 Amo Groningen B.V. Multizonal lens with extended depth of focus
US7594729B2 (en) 2007-10-31 2009-09-29 Wf Systems, Llc Wavefront sensor
AU2009214036B2 (en) 2008-02-15 2014-04-17 Amo Regional Holdings System, ophthalmic lens, and method for extending depth of focus
US8439498B2 (en) 2008-02-21 2013-05-14 Abbott Medical Optics Inc. Toric intraocular lens with modified power characteristics
US8862447B2 (en) 2010-04-30 2014-10-14 Amo Groningen B.V. Apparatus, system and method for predictive modeling to design, evaluate and optimize ophthalmic lenses
US8550624B2 (en) 2008-11-06 2013-10-08 Wavetec Vision Systems, Inc. Optical angular measurement system for ophthalmic applications and method for positioning of a toric intraocular lens with increased accuracy
US8876290B2 (en) 2009-07-06 2014-11-04 Wavetec Vision Systems, Inc. Objective quality metric for ocular wavefront measurements
ES2542903T3 (es) 2009-07-14 2015-08-12 Wavetec Vision Systems, Inc. Sistema de medición para cirugía oftálmica
EP2453822B1 (fr) * 2009-07-14 2014-08-20 WaveTec Vision Systems, Inc. Determination de la position efficace de lentille d'une lentille intraoculaire au moyen d'une puissance de refraction aphaque
US8210683B2 (en) * 2009-08-27 2012-07-03 Virginia Mason Medical Center No-history method for intraocular lens power adjustment after excimer laser refractive surgery
EP2512370B1 (fr) 2009-12-18 2020-10-21 AMO Groningen B.V. Lentille à échelette limitée
EP2646872A1 (fr) 2010-12-01 2013-10-09 AMO Groningen B.V. Une lentille multifocale avec une progression de puissance optique , un system et und méthode pour fournir cette lentille
DE102011075149A1 (de) * 2011-05-03 2011-12-08 *Acri.Tec Gmbh Verfahren und Vorrichtung zur präoperativen Vorhersage einer postoperativen horizontalen Tiefenlage einer Intraokularlinse in einem Auge
JP5887839B2 (ja) 2011-10-31 2016-03-16 株式会社ニデック 眼内レンズ度数決定装置及びプログラム
JP2013135837A (ja) 2011-11-30 2013-07-11 Nidek Co Ltd 眼科装置及び眼科プログラム
US9072462B2 (en) 2012-09-27 2015-07-07 Wavetec Vision Systems, Inc. Geometric optical power measurement device
US8920628B2 (en) 2012-11-02 2014-12-30 Roche Diagnostics Operations, Inc. Systems and methods for multiple analyte analysis
US9717628B2 (en) 2012-12-04 2017-08-01 Amo Groningen B.V. Lenses, systems and methods for providing binocular customized treatments to correct presbyopia
WO2015117155A1 (fr) * 2014-02-03 2015-08-06 Shammas Hanna Système et procédé de détermination de puissance de lentille intraoculaire
WO2017137839A1 (fr) 2016-02-09 2017-08-17 Amo Groningen B.V. Lentille intraoculaire progressive et ses procédés d'utilisation et de fabrication
JP6052445B2 (ja) * 2016-02-17 2016-12-27 株式会社ニデック 眼内レンズ度数決定装置及びプログラム
CA3018545A1 (fr) 2016-03-23 2017-09-28 Johnson & Johnson Surgical Vision, Inc. Calculateur de puissance pour un appareil ophtalmique avec meridiens correctifs ayant une tolerance ou bande operationnelle etendue
AU2017237076B2 (en) 2016-03-23 2021-11-18 Johnson & Johnson Surgical Vision, Inc. Ophthalmic apparatus with corrective meridians having extended tolerance band with freeform refractive surfaces
EP3522771B1 (fr) 2016-10-25 2022-04-06 Amo Groningen B.V. Modèles oculaires réalistes pour modéliser et évaluer des lentilles intraoculaires pour un grand champ de vision
US10739227B2 (en) 2017-03-23 2020-08-11 Johnson & Johnson Surgical Vision, Inc. Methods and systems for measuring image quality
EP3687447A1 (fr) 2017-11-30 2020-08-05 AMO Groningen B.V. Lentilles intraoculaires permettant d'améliorer l'indépendance vis à vis des lunettes après une intervention chirurgicale et leurs procédés de fabrication
US11886046B2 (en) 2019-12-30 2024-01-30 Amo Groningen B.V. Multi-region refractive lenses for vision treatment
CN112957004B (zh) * 2021-02-01 2023-12-19 复旦大学附属眼耳鼻喉科医院 一种基于IOLMaster图像的晶状体曲率和屈光度获取方法与系统
EP4333685B1 (fr) 2021-05-05 2026-01-14 AMO Groningen B.V. Système d'halomètre annulaire et procédé de quantification de dysphotopsies

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US6626538B1 (en) * 2000-07-12 2003-09-30 Peter N. Arrowsmith Method for determining the power of an intraocular lens used for the treatment of myopia
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US7311402B2 (en) * 2001-09-07 2007-12-25 Kabushiki Kaisha Topcon Eye optical characteristic measuring instrument
US6634751B2 (en) * 2001-09-10 2003-10-21 Bausch & Lomb Incorporated Intraocular lens derivation system
US7490938B2 (en) * 2004-02-09 2009-02-17 Robert Adam Latkany Method, device and computer program for selecting an intraocular lens for an aphakic eye that has previously been subjected to refractive surgery
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Also Published As

Publication number Publication date
JP2007505716A (ja) 2007-03-15
WO2005030044A1 (fr) 2005-04-07
US20080231809A1 (en) 2008-09-25
DE10344781A1 (de) 2005-04-14

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