AT507140A3 - Mehrfach-a-scan kurzkohärenz-interferometrische distanzmessung am auge - Google Patents

Mehrfach-a-scan kurzkohärenz-interferometrische distanzmessung am auge Download PDF

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Publication number
AT507140A3
AT507140A3 AT12502008A AT12502008A AT507140A3 AT 507140 A3 AT507140 A3 AT 507140A3 AT 12502008 A AT12502008 A AT 12502008A AT 12502008 A AT12502008 A AT 12502008A AT 507140 A3 AT507140 A3 AT 507140A3
Authority
AT
Austria
Prior art keywords
signals
eye
distance measurement
ascan
signal acquisition
Prior art date
Application number
AT12502008A
Other languages
English (en)
Other versions
AT507140A2 (de
AT507140B1 (de
Inventor
Adolf Friedrich Dr Fercher
Branislav Dr Grajciar
Original Assignee
Zeiss Carl 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 Zeiss Carl Meditec Ag filed Critical Zeiss Carl Meditec Ag
Priority to AT12502008A priority Critical patent/AT507140B1/de
Priority to US13/059,039 priority patent/US8534838B2/en
Priority to EP09777799.9A priority patent/EP2346386B1/de
Priority to PCT/EP2009/005811 priority patent/WO2010017954A2/de
Publication of AT507140A2 publication Critical patent/AT507140A2/de
Publication of AT507140A3 publication Critical patent/AT507140A3/de
Application granted granted Critical
Publication of AT507140B1 publication Critical patent/AT507140B1/de

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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
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/1005—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring distances inside the eye, e.g. thickness of the cornea
    • 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
    • A61B3/102—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for optical coherence tomography [OCT]

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

Bei der Kurzkohärenz-interferometrischen Distanzmessung am Auge treten an markanten Gewebegrenzen, wie der Cornea-Vorderfläche und den Fundusschichten, Lichtreflexe auf, die die Basis für die Distanzmessungbilden. Diese Lichtreflexe und Messsignale sind jedoch nicht immer richtig identifizierbar; Fehlmessungen sind das Ergebnis. Es werden verschiedene Signal-Gewinnungsverfahren beschrieben, die eine eindeutige Identifizierung der AScan Signale erlauben. Diese basieren auf der Bildung verschiedener Summen-AScan Signale aus mehreren seitlich zueinander versetzten und/oder zeitlich aufeinander folgenden einfachen A-Scans. Es werden ferner Anordnungen zur Parallel- Fourier-Domain Kurzkohärenz-Interferometrie beschrieben, die eine Anwendung dieser Signal-Gewinnungsverfahren ermöglichen oder erleichtern. Solche basierenauf der Verwendung einer minimalen Anzahl polarisationsoptischer und/oder diffraktionsoptischer doppelbrechender Optiken.
AT12502008A 2008-08-12 2008-08-12 Mehrfach-a-scan kurzkohärenz-interferometrische distanzmessung am auge AT507140B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT12502008A AT507140B1 (de) 2008-08-12 2008-08-12 Mehrfach-a-scan kurzkohärenz-interferometrische distanzmessung am auge
US13/059,039 US8534838B2 (en) 2008-08-12 2009-08-11 Optical coherence reflectometry with depth resolution
EP09777799.9A EP2346386B1 (de) 2008-08-12 2009-08-11 Tiefenauflösende optische kohärenzreflektometrie
PCT/EP2009/005811 WO2010017954A2 (de) 2008-08-12 2009-08-11 Tiefenauflösende optische kohärenzreflektrometrie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT12502008A AT507140B1 (de) 2008-08-12 2008-08-12 Mehrfach-a-scan kurzkohärenz-interferometrische distanzmessung am auge

Publications (3)

Publication Number Publication Date
AT507140A2 AT507140A2 (de) 2010-02-15
AT507140A3 true AT507140A3 (de) 2012-11-15
AT507140B1 AT507140B1 (de) 2013-03-15

Family

ID=41664421

Family Applications (1)

Application Number Title Priority Date Filing Date
AT12502008A AT507140B1 (de) 2008-08-12 2008-08-12 Mehrfach-a-scan kurzkohärenz-interferometrische distanzmessung am auge

Country Status (1)

Country Link
AT (1) AT507140B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017168181A1 (en) * 2016-04-01 2017-10-05 The University Of Liverpool Optical interferometry apparatus and method
EP3846751B1 (de) * 2018-09-04 2024-12-18 AMO Development, LLC Beleuchtungsring mit schmalem winkel für ein ophthalmologisches chirurgisches lasersystem
DE102023205348A1 (de) * 2023-06-08 2024-12-12 Carl Zeiss Meditec Ag Verfahren mit hoher Messempfindlichkeit zur optischen Biometrie von Augen mit einer Katarakterkrankung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT506093A2 (de) * 2007-11-22 2009-06-15 Adolf Friedrich Dr Fercher Signaloptimierung für die ophthalmologische kurzkohärenz-interferometrie

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT506093A2 (de) * 2007-11-22 2009-06-15 Adolf Friedrich Dr Fercher Signaloptimierung für die ophthalmologische kurzkohärenz-interferometrie

Also Published As

Publication number Publication date
AT507140A2 (de) 2010-02-15
AT507140B1 (de) 2013-03-15

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Effective date: 20250812