I.S. EN ISO 15253:2001
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
OPHTHALMIC OPTICS AND INSTRUMENTS - OPTICAL DEVICES FOR ENHANCING LOW VISION
Hardcopy , PDF
04-08-2021
English
01-01-2001
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
4.1 Magnifiers
4.2 Telescopes - Distance vision
4.3 Telescopes - Near-vision/telemicroscopes
4.4 Telescopes - Adjustable
5 Requirements
5.1 Optical characteristics
5.2 Materials and construction
6 Environmental conditions of use
7 Test methods
7.1 General
7.2 Equivalent power - Magnifiers
7.3 Angular magnification - Telescopes
7.4 Resolution test
7.5 Determination of lateral variation of
magnification
8 Marking and instructions for use
8.1 Marking
8.2 Information to be provided by the manufacturer
Annex A (informative) Determination of lateral variation of
magnification
Annex B (informative) List of equivalent terms
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