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  • BS 3521-1:1991

    Current The latest, up-to-date edition.

    Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to ophthalmic lenses

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  30-09-1991

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Committees responsible
    Foreword
    Glossary
    Section
    1 Basic and general terms
    2 Types of surfaces
    3 General classes of lenses
    4 Focal properties
    5 Prismatic properties
    6 Spherical lenses
    7 Astigmatic lenses
    8 Image defects and best-form lenses
    9 Lenticular lenses
    10 Bifocal, multifocal and progressive power lenses
    11 Tinted and coated lenses
    12 Protective lenses
    13 Magnifying devices
    14 Miscellaneous lenses and spectacles
    15 Trial case accessories
    16 Manufacturing processes
    17 Defects
    18 Verification
    19 Miscellaneous terms
    Figures
    1 Boxed lens size, lens shape and shape difference
    2 Tyre formation
    3 Barrel formation
    4 Capstan formation
    5 Oblique astigmatism
    6 Bifocal lens: segment circle
    7 Segment dimensions
    8 Bifocal lens: segment inset
    Index

    Abstract - (Show below) - (Hide below)

    Defines terms used to describe lenses, their ophthalmic properties and defects, and the manufacturing processes.

    General Product Information - (Show below) - (Hide below)

    Committee CH/172
    Development Note Supersedes 89/50063 DC and BS 3521-1&2(1962) (07/2005) Reviewed and confirmed by BSI, January 2013. (12/2012)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    04/100506 DC : DRAFT JAN 2004 BS 2738-3 - SPECTACLE LENSES - PART 3: SPECIFICATION FOR THE PRESENTATION OF PRESCRIPTIONS AND PRESCRIPTION ORDERS FOR OPHTHALMIC LENSES
    BS 7522-1:1992 Low vision aids Specification for hand and stand magnifiers, including magnifiers with an integral source of illumination
    BS 7522-2:1993 Low vision aids Specification for spectacle magnifiers and similar devices
    BS 2738-3(2004) : 2004 SPECTACLE LENSES - PART 3: SPECIFICATION FOR THE PRESENTATION OF PRESCRIPTIONS AND PRESCRIPTION ORDERS FOR OPTHALMIC LENSES
    BS 4274-1:2003 Visual acuity test types Test charts for clinical determination of distance visual acuity. Specification
    BS 7394-2:2007 Complete spectacles Specification for prescription spectacles
    BS 7394-1:1996 Complete spectacles Specification for ready-to-wear near-vision spectacles
    BS 2724:1987 Specification for sun glare eye protectors for general use
    07/30082138 DC : DRAFT FEB 2007 BS 7394-2 - COMPLETE SPECTACLES - PART 2: SPECIFICATION FOR PRESCRIPTION SPECTACLES
    BS 7394-2:1994 Complete spectacles Specification for prescription spectacles
    BS 2738-1:1989 Spectacle lenses Specification for tolerances on optical properties of mounted spectacle lenses
    BS 3521-2:1991+A1:1996 Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to spectacle frames
    BS 2738-3:1991 Spectacle lenses Specification for the presentation of prescriptions and prescription orders for ophthalmic lenses

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 4274(1968) : AMD 9200 SPECIFICATION FOR TEST CHARTS FOR DETERMINING DISTANCE VISUAL ACUITY
    BS 3062:1985 Specification for ophthalmic lens materials
    BS 3521-2:1991+A1:1996 Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to spectacle frames
    BS 3199:1972 Method for measurement of spectacles including a glossary of terms
    BS 3668:1963 Specification for red and green filters used in ophthalmic dichromatic and dissociation tests
    BS 4110:1979 Specification for eye-protectors for vehicle users
    ISO 4007:2012 Personal protective equipment Eye and face protection Vocabulary
    BS 6625-2(1992) : AMD 9446 SPECTACLE FRAMES - SPECIFICATION FOR MARKING
    BS 7394-1:1991 Complete spectacles Specification for ready-to-wear near-vision spectacles
    BS 7394-2:1994 Complete spectacles Specification for prescription spectacles
    BS 3172:1987 Specification for screw threads for spectacle frames
    BS 6903(1987) : 1987 AMD 9444 SPECIFICATIONS FOR GRADUATED DIAL SCALES FOR OPHTHALMIC INSTRUMENTS
    BS 2738:1985 Specification for tolerances on optical properties of mounted spectacle lenses
    BS 3162:1959 Specification for ophthalmic trial case lenses
    BS 6625-1:1985 Spectacle frames. Specification for general requirements
    BS 7017:1988 Specification for reference wavelengths for optics and optical instruments
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