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1. WO2016142435 - MYOPIA SCAN MODULE FOR OPTICAL COHERENCE TOMOGRAPHY SYSTEM

Publication Number WO/2016/142435
Publication Date 15.09.2016
International Application No. PCT/EP2016/055055
International Filing Date 09.03.2016
IPC
A61B 3/10 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
3Apparatus for testing the eyes; Instruments for examining the eyes
10Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/12 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
3Apparatus for testing the eyes; Instruments for examining the eyes
10Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
12for looking at the eye fundus, e.g. ophthalmoscopes
G01B 9/02 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9Instruments as specified in the subgroups and characterised by the use of optical measuring means
02Interferometers
CPC
A61B 3/102
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
3Apparatus for testing the eyes; Instruments for examining the eyes
10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
102for optical coherence tomography [OCT]
A61B 3/1225
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
3Apparatus for testing the eyes; Instruments for examining the eyes
10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
12for looking at the eye fundus, e.g. ophthalmoscopes
1225using coherent radiation
G01B 9/02063
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9Instruments as specified in the subgroups and characterised by the use of optical measuring means
02Interferometers ; for determining dimensional properties of, or relations between, measurement objects
02055characterised by error reduction techniques
02062Active error reduction, i.e. varying with time
02063by particular alignment of focus position, e.g. dynamic focussing in optical coherence tomography
G01B 9/02091
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9Instruments as specified in the subgroups and characterised by the use of optical measuring means
02Interferometers ; for determining dimensional properties of, or relations between, measurement objects
02091Tomographic low coherence interferometers, e.g. optical coherence tomography
Applicants
  • CARL ZEISS MEDITEC AG [DE]/[DE]
  • CARL ZEISS MEDITEC, INC. [US]/[US]
Inventors
  • GUO, Xiaoxian
  • PESCHKA, Martin
  • QIU, Yue
Agents
  • BECK, Bernard
Priority Data
201510104688.210.03.2015CN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MYOPIA SCAN MODULE FOR OPTICAL COHERENCE TOMOGRAPHY SYSTEM
(FR) MODULE DE BALAYAGE DE MYOPIE POUR SYSTÈME DE TOMOGRAPHIE PAR COHÉRENCE OPTIQUE
Abstract
(EN)
The present invention relates to an OCT system, comprising an OCT scan module for retinal scan; the OCT system further comprises a myopia scan module which can be added to the OCT scan module so as to switch the OCT system from a function of scanning an emmetropic eye to a function of scanning a myopic eye with longer axis length; the myopia scan module has negative power such that a scan beam from the OCT system before entry into a myopic eye with elongated axis length is divergent to increase a focusing angle of the scan beam focused on the retina of the myopic eye with longer axis length and to decrease a maximum OPD spanned by the imaged retina area, thereby obtaining a stronger scan signal and greater signal-to-noise ratio and avoiding false "mirror images".
(FR)
La présente invention concerne un système OCT, comprenant un module de balayage OCT pour un balayage rétinien ; le système OCT comprend en outre un module de balayage de myopie qui peut être ajouté au module de balayage OCT de façon à commuter le système OCT d'une fonction de balayage d'un œil emmétrope à une fonction de balayage d'un œil myope présentant une longueur d'axe plus longue ; le module de balayage de myopie a une puissance négative de telle sorte qu'un faisceau de balayage provenant du système OCT, avant l'entrée dans un œil myope présentant une longueur d'axe allongée, est divergent pour augmenter un angle de focalisation du faisceau de balayage focalisé sur la rétine de l’œil myope avec une longueur d'axe plus longue, et pour diminuer une OPD maximale couverte par la zone rétinienne imagée, ce qui permet d'obtenir un signal de balayage plus fort et un rapport signal-bruit plus important et d'éviter de fausses "images miroir".
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