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BS 4274-1:1968

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

Standard Details

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.

General Information

Status : WITHDRAWN
Standard Type: Main
Document No: BS 4274-1:1968
Document Year: 1968
Pages: 12
  • Section Volume:
  • GBM05 Sciences & Healthcare (GMB05)

Life Cycle

Confirmed

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WITHDRAWN
BS 4274-1:1968
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