BS 4274-1:1968 - Visual acuity test types. Specification for test charts for clinically determining distance visual acuity

BS 4274-1:1968

Visual acuity test types. Specification for test charts for clinically determining distance visual acuity

Status : Withdrawn, Revised   Published : January 1968 Replaced By : BS 4274-1:2003

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Basic requirements for test charts designed for either internal or external illumination, employing English (Roman) capital letters to determine the distance visual acuity. Provision is also made for the single letter C (Landolt or broken ring) and the single letter E (illiterate E) in various orientations.




Standard NumberBS 4274-1:1968
TitleVisual acuity test types. Specification for test charts for clinically determining distance visual acuity
StatusWithdrawn, Revised
Publication Date26 January 1968
Confirm Date15 October 1984
Withdrawn Date13 January 2003
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Replaced ByBS 4274-1:2003
Amended ByAMD 9200
Draft Superseded By67/5208 DC
DescriptorsTest charts (ophthalmic), Ophthalmic test equipment, Ophthalmic equipment, Size, Letters (symbols), Contrast (optical), Illuminance, Luminance, Lighting levels, Lighting systems, Spaced, Dimensional tolerances
ICS11.040.70
Title in FrenchTableaux pour tests de determination de l'acuite visuelle a distance. Specification
Title in GermanTestkarten zur Bestimmung der Fern-Sehschaerfe. Spezifikation
CommitteeCH/172
ISBN0 580 00039 7
PublisherBSI
FormatA4
DeliveryNo
Pages12
File Size262.3 KB
Price£110.00


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