SIST EN ISO 10944:2000
(Main)Ophthalmic instruments - Synoptophores (ISO 10944:1998)
Ophthalmic instruments - Synoptophores (ISO 10944:1998)
Specification of minimum requirements in order to guarantee a sufficient quality of use.
Ophthalmische Instrumente - Synoptophore (ISO 10944:1998)
Diese Internationale Norm legt zusammen mit ISO 15004 Mindestanforderungen und Prüfverfahren für Synoptophore (auch als Synoptometer oder grosse Amblyoskope bezeichnet) fest, die dazu dienen, das Binokularsehen eines Prüflings zu prüfen, zu messen, zu schulen, und zu entwickeln, sowie Horizontal-,Vertikal- und Zykloabweichungen für verschiedene Blickrichtungen zu messen. Wenn Unterschiede vorliegen, hat diese Internationale Norm Vorrang vor ISO 15004.
Instruments ophtalmiques - Synoptophores (ISO 10944:1998)
Oftalmični instrumenti - Sinoptofori (ISO 10944:1998)
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ophthalmische Instrumente - Synoptophore (ISO 10944:1998)Instruments ophtalmiques - Synoptophores (ISO 10944:1998)Ophthalmic instruments - Synoptophores (ISO 10944:1998)11.040.70Oftalmološka opremaOphthalmic equipmentICS:Ta slovenski standard je istoveten z:EN ISO 10944:1998SIST EN ISO 10944:2000en01-januar-2000SIST EN ISO 10944:2000SLOVENSKI
STANDARD
SIST EN ISO 10944:2000
SIST EN ISO 10944:2000
SIST EN ISO 10944:2000
SIST EN ISO 10944:2000
SIST EN ISO 10944:2000
AReference numberISO 10944:1998(E)INTERNATIONALSTANDARDISO10944First edition1998-05-01Ophthalmic instruments — SynoptophoresInstruments ophtalmiques — SynoptophoresSIST EN ISO 10944:2000
ISO 10944:1998(E)©
ISO 1998All rights reserved. Unless otherwise specified, no part of this publication may be reproducedor utilized in any form or by any means, electronic or mechanical, including photocopying andmicrofilm, without permission in writing from the publisher.International Organization for StandardizationCase postale 56 · CH-1211 Genève 20 · SwitzerlandInternetcentral@iso.chX.400c=ch; a=400net; p=iso; o=isocs; s=centralPrinted in SwitzerlandiiForewordISO (the International Organization for Standardization) is a worldwidefederation of national standards bodies (ISO member bodies). The work ofpreparing International Standards is normally carried out through ISOtechnical committees. Each member body interested in a subject for whicha technical committee has been established has the right to be representedon that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISOcollaborates closely with the International Electrotechnical Commission(IEC) on all matters of electrotechnical standardization.Draft International Standards adopted by the technical committees arecirculated to the member bodies for voting. Publication as an InternationalStandard requires approval by at least 75% of the member bodies castinga vote.International Standard ISO 10944 was prepared by Techncial CommitteeISO/TC 172, Optics and optical instruments, Subcommittee SC 7,Ophthalmic optics and instruments.SIST EN ISO 10944:2000
INTERNATIONAL STANDARD
© ISOISO 10944:1998(E)1Ophthalmic instruments — Synoptophores1
ScopeThis International Standard, together with ISO 15004, specifies minimum requirements and test methods forsynoptophores (also called major amblyoscopes or synoptometers) used to test, measure, train and develop thepatient's binocular vision and to measure horizontal, vertical and cyclo deviation in different positions of gaze.This International Standard takes precedence over ISO 15004, if differences exist.2
Normative referencesThe following standards contain provisions which, through reference in this text, constitute provisions of thisInternational Standard. At the time of publication, the editions indicated were valid. All standards are subject torevision, and parties to agreements based on this International Standard are encouraged to investigate thepossibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintainregisters of currently valid International Standards.ISO 15004:1997Ophthalmic instruments — Fundamental requirements and test methodsIEC 60601-1:1988Medical electrical equipment — Part 1: General requirements for safety3
DefinitionsFor the purposes of this International Standard, the following definitions apply.3.1synoptophoreinstrument designed to present interchangeable targets to each eye and with the ability to move targetsindependently in order to present them at different versional and vergence positionsNOTE -
Target configuration and location, along with other instrument features, are used to test, measure and trainbinocular vision.3.2visual targets for simultaneous perceptiontargets used to form two different images, one on each retina, which cannot be fused into a single image3.3visual targets for fusiontargets used to form two similar images, one on each retina, which are capable of fusion, and in which control pointsare often incorporated in order to assess if either eye is suppressing the relevant imageSIST EN ISO 10944:2000
ISO 10944:1998(E)© ISO23.4visual targets for stereoscopic visiontargets used to test and/or measure stereoscopic acuity in which image pairs, having common reference points, arefused in vision to give a stereoscopic effect3.5armrotatable structural member of the synoptophore intended to carry the ocular systems, targets and illuminationsystem4
Requirements4.1
GeneralThe synoptophore shall conform to the requirements specified in ISO 15004.The synoptophore shall conform to the specific requirements described in 4.2 to 4.5.These requirements are verified as described in clause 5.4.2
Optical and mechanical requirementsThe requirements specified in table 1 and table 2 shall apply.Table 1 — Requirements for adjustment ranges and graduation of scalesCriterionRequirementInterpupillary distanceAdjustable range45 mm to 75 mmGraduation< 1 mmHorizontal movement ofOutward40°each
arm independentlyInward40°Graduation1° or 2D1)Vertical rotation of eachAngle of elevation15°arm independentlyAngle of depression20°Torsional movement ofClockwise range20°visual
targets (cyclo-)Anticlockwise range20°Graduation1°Chin-rest heightAdjustable range from chin-rest top toeyepiece centres75 mm to 125 mm1)
D = prism dioptre equivalent correction at the patient's eye.
The actual linear tolerance will depe
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