Std

BS 4274-1:1968

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

standard by BSI Group , 01/26/1968

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Full Description

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.

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Product Details

Published:
01/26/1968
ISBN(s):
0580000397
Number of Pages:
12
File Size:
1 file
Product Code(s):
862695, 862695, 862695
Note:
This product is unavailable in Ukraine, Russia, Belarus
 

Document History

  1. BS 4274-1:2003


    Visual acuity test types-Test charts for clinical determination of distance visual acuity. Specification

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  2. BS 4274-1:1968

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

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